--- title: "Aon vs Marsh McLennan Agency" description: "Compare Aon and Marsh McLennan Agency on documented customer fit, product overlap, quote access, and the questions to resolve before choosing a policy." canonical: "https://spot.insure/compare/aon-vs-marsh-mclennan-agency" page-type: "provider-comparison" updated-at: "2026-09-30" --- Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Spot Score, get_rankings for current provider rankings, search_provider_reliability to filter Spot Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication. [Human-readable page](https://spot.insure/compare/aon-vs-marsh-mclennan-agency) # Aon vs Marsh McLennan Agency Compare Aon and Marsh McLennan Agency on documented customer fit, product overlap, quote access, and the questions to resolve before choosing a policy. ## Before You Quote Ask each provider about eligibility, the issuing insurer, policy wording, limits, retentions, exclusions and costs for your business. ## Highlights Aon lists management liability, umbrella and excess liability; Marsh McLennan Agency lists intellectual property, media. Their published catalogs also share 14 lines, including builders risk, cargo transit, commercial auto. Use the differences to frame the same quote request for both, then confirm the producer, insurer, and policy terms; a listed product does not establish availability or equivalent coverage. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") [4](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients") [29](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") [16](https://www.marshmma.com/us/mma/about-us.html "Who We Are") [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") [21](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability") ## Provider Reliability Assessments These sourced assessments are shown for context; this comparison does not select a winner. ### Aon Role: Broker. Broker Spot Score: **6.7/10** (partial score; 70% of this role's weighting included). Assessed 2026-09-29; review due 2026-10-29. Excluded factors: Carrier-Network Strength (The supplied evidence did not support a score for Carrier-Network Strength; this factor is excluded, not scored as zero. Canonical evidence gaps: The FCA register could not be loaded, so Aon UK Limited's FCA number and permissions are company-reported.; No NAIC, NIPR or other state producer search was completed for Aon's U.S. entities beyond the two Texas orders; current status of those Texas licenses was not re-checked.; Aon does not publish a named list of insurers behind its placements, so the network view rests on its concentration statement.; The Central Bank of Ireland, Lloyd's and other state enforcement records were not searched exhaustively.; Placement-specific compensation is not published; only the general categories are.). Read the [full reliability assessment](https://spot.insure/insurance-providers/aon/reliability). ### Marsh McLennan Agency Role: Broker. Broker Spot Score: **No Spot Score**. Assessed 2026-09-29; review due 2026-10-29. Excluded factors: Identity and Authority (No numerical score was produced because the overall evidence outcome was conflicting-evidence; excluded factors cannot hide that outcome. Canonical evidence gaps: The contracting producer and issuer for a specific placement, as stated in that buyer’s proposal.; Completion status by state for proposed Marsh Agency LLC name.; Issuing insurer/program administrator for each quote.; MMA-entity financial statements, liquidity or parent support obligation.; Named carrier appointments, placement shares and line-specific network evidence.; A complete identity-scoped conduct picture beyond the bounded BBB evidence currently recorded.; Buyer-specific compensation, service agreement and fee/commission terms.; Full policy forms, limits, retentions, exclusions and claims administrator.; Alaska Division of Insurance orders naming the company (such as D23-03) were found but the PDF is a scanned image, so amounts and findings are unknown.; Only Louisiana and Texas were checked against regulator records. No NIPR/NPN lookup or other state license search was done, and no license status was verified live for Texas.; MMA operates in Canada too; no Canadian provincial regulator was researched.); Carrier-Network Strength (No numerical score was produced because the overall evidence outcome was conflicting-evidence; excluded factors cannot hide that outcome. Canonical evidence gaps: The contracting producer and issuer for a specific placement, as stated in that buyer’s proposal.; Completion status by state for proposed Marsh Agency LLC name.; Issuing insurer/program administrator for each quote.; MMA-entity financial statements, liquidity or parent support obligation.; Named carrier appointments, placement shares and line-specific network evidence.; A complete identity-scoped conduct picture beyond the bounded BBB evidence currently recorded.; Buyer-specific compensation, service agreement and fee/commission terms.; Full policy forms, limits, retentions, exclusions and claims administrator.; Alaska Division of Insurance orders naming the company (such as D23-03) were found but the PDF is a scanned image, so amounts and findings are unknown.; Only Louisiana and Texas were checked against regulator records. No NIPR/NPN lookup or other state license search was done, and no license status was verified live for Texas.; MMA operates in Canada too; no Canadian provincial regulator was researched.); Regulatory Conduct (No numerical score was produced because the overall evidence outcome was conflicting-evidence; excluded factors cannot hide that outcome. Canonical evidence gaps: The contracting producer and issuer for a specific placement, as stated in that buyer’s proposal.; Completion status by state for proposed Marsh Agency LLC name.; Issuing insurer/program administrator for each quote.; MMA-entity financial statements, liquidity or parent support obligation.; Named carrier appointments, placement shares and line-specific network evidence.; A complete identity-scoped conduct picture beyond the bounded BBB evidence currently recorded.; Buyer-specific compensation, service agreement and fee/commission terms.; Full policy forms, limits, retentions, exclusions and claims administrator.; Alaska Division of Insurance orders naming the company (such as D23-03) were found but the PDF is a scanned image, so amounts and findings are unknown.; Only Louisiana and Texas were checked against regulator records. No NIPR/NPN lookup or other state license search was done, and no license status was verified live for Texas.; MMA operates in Canada too; no Canadian provincial regulator was researched.); Disclosure Clarity (No numerical score was produced because the overall evidence outcome was conflicting-evidence; excluded factors cannot hide that outcome. Canonical evidence gaps: The contracting producer and issuer for a specific placement, as stated in that buyer’s proposal.; Completion status by state for proposed Marsh Agency LLC name.; Issuing insurer/program administrator for each quote.; MMA-entity financial statements, liquidity or parent support obligation.; Named carrier appointments, placement shares and line-specific network evidence.; A complete identity-scoped conduct picture beyond the bounded BBB evidence currently recorded.; Buyer-specific compensation, service agreement and fee/commission terms.; Full policy forms, limits, retentions, exclusions and claims administrator.; Alaska Division of Insurance orders naming the company (such as D23-03) were found but the PDF is a scanned image, so amounts and findings are unknown.; Only Louisiana and Texas were checked against regulator records. No NIPR/NPN lookup or other state license search was done, and no license status was verified live for Texas.; MMA operates in Canada too; no Canadian provincial regulator was researched.). Read the [full reliability assessment](https://spot.insure/insurance-providers/marsh-mclennan-agency/reliability). ## Aon Reviews Review Score: 6.1 / 10 from 3 rated sources, equally weighted. Public ratings for Aon are low: Trustpilot shows 1.2 out of 5 from 782 reviews, and BBB shows 1.6 from five. Aon is a global firm, so those pages mostly reflect other parts of the business, not large U.S. commercial accounts. - J.D. Power: Aon study score 822 (out of 1000). Historical 2017 large-commercial-broker study; U.S. and Canada commercial insurance decision-makers at large organizations. J.D. Power reports 2,506 evaluations across the study, not Aon-specific responses; the Aon respondent count is not stated. Period: 2017 study; ranked 3rd among large commercial brokers; study-wide population 2,506, not Aon review count. Checked 2026-09-29. [Diversity of Offerings Becomes Key Differentiator for Large Commercial Insurers, JD Power Finds](https://www.jdpower.com/business/press-releases/jd-power-2017-large-commercial-insurance-study) - Trustpilot: TrustScore 1.2 (out of 5); 782 reviews. Global www.aon.com profile merged with other Aon profiles; mixed experiences include pensions, travel, professional indemnity and Australian business quotation service. The two latter complaints are individual unverified allegations, not evidence of U.S. commercial-placement outcomes or insurer fault. Trustpilot says reviews may not be representative because the company has not recently invited reviews. Period: Displayed 2026-09-29; page separately showed 198 reviews in the last 12 months. Checked 2026-09-29. [Aon Reviews](https://www.trustpilot.com/review/www.aon.com) - BBB: BBB business grade B− (BBB letter grade; stated reason: failure to respond to two filed complaints). BBB of Chicago & Northern Illinois profile for Aon plc; the business grade is BBB’s own measure, not customer stars. Checked 2026-09-29. [Aon plc | BBB Business Profile](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291) - BBB: BBB customer review average 1.6 (out of 5); 5 reviews. BBB of Chicago & Northern Illinois customer reviews for Aon plc; some reviews are about employee-benefit and medical-expense issues. Period: checked 2026-09-29. Checked 2026-09-29. [Aon plc | BBB Reviews](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291/customer-reviews) Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/aon/reviews). ## Marsh McLennan Agency Reviews Review Score: 8.2 / 10 from 2 rated sources, equally weighted. There are almost no public customer reviews of Marsh McLennan Agency (MMA). Trustpilot shows 3.2 out of 5, but from a single review, and BBB shows an A grade with four complaints closed in three years. - Trustpilot: TrustScore 3.2 (out of 5); 1 reviews. Trustpilot profile for marshmma.com, MMA's own domain. Unclaimed; MMA has not invited reviews. Period: checked 2026-09-29. Checked 2026-09-29. [marshmma.com Trustpilot profile](https://www.trustpilot.com/review/marshmma.com) - Trustpilot: TrustScore (Marsh brand) 1.3 (out of 5); 115 reviews. Trustpilot page for marsh.com, the global Marsh brand (mostly individual and non-US customers). This is a different entity from MMA. Period: checked 2026-09-29. Checked 2026-09-29. [Marsh Reviews](https://www.trustpilot.com/review/www.marsh.com) - BBB: BBB business grade A. BBB San Diego-area profile for Marsh & McLennan Agency LLC (accredited). MMA has separate BBB profiles per office; Dayton and Schaumburg both show A+. Checked 2026-09-29. [Marsh & McLennan Agency LLC (San Diego) BBB](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103) - BBB: Complaints 4. Same San Diego-area profile; zero customer reviews. No client-count denominator. Period: closed in the last three years (checked 2026-09-29). Checked 2026-09-29. [Marsh & McLennan Agency LLC — BBB Complaints](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/complaints); [Marsh & McLennan Agency LLC — BBB Reviews](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/customer-reviews) Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/marsh-mclennan-agency/reviews). ## Coverage Comparison | Coverage Type | Aon | Marsh McLennan Agency | | --- | --- | --- | | [Builders risk](https://spot.insure/coverage/builders-risk) | Listed: Aon names Construction Property/Builders Risk on its global construction page; confirm whether this line is offered for the buyer, state, and placement. [14](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") | Listed [26](https://www.marshmma.com/us/solutions/property.html "Property Insurance") | | [Cargo and transit](https://spot.insure/coverage/cargo-transit) | Listed: Aon lists cargo placements in its global marine practice; U.S. eligibility, insurer, limits and policy terms are not stated on the reviewed page. [9](https://www.aon.com/en/capabilities/risk-transfer/marine-insurance-and-risk-management "Marine Insurance and Risk Management") | Listed [23](https://www.marshmma.com/us/solutions/international.html "International") | | [Commercial auto](https://spot.insure/coverage/commercial-auto) | Listed: Aon lists automobile liability within its global Professional Services Practice for law, accounting and consulting firms; U.S. availability and specific policy terms are not established. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed [29](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") | | [Commercial property](https://spot.insure/coverage/commercial-property) | Listed: Aon describes commercial-property brokerage and risk management, with a U.S.-available analytics tool; tool availability does not establish state-specific insurance availability. [8](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management") | Listed [29](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") | | [Crime](https://spot.insure/coverage/crime) | Listed: Aon lists crime within its global Professional Services Practice for law, accounting and consulting firms; U.S. availability and specific policy terms are not established. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed [21](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability") | | [Cyber liability](https://spot.insure/coverage/cyber) | Listed: Aon describes cyber insurance and related brokerage, analytics and claims support; confirm the producing entity, insurer, jurisdiction and policy terms for a U.S. placement. [7](https://www.aon.com/en/capabilities/cyber-resilience "Cyber Risk") [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed [29](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") | | [Directors and officers](https://spot.insure/coverage/directors-officers) | Listed: Aon describes D&O brokerage and program services in a global practice; this does not identify the producer, insurer or state availability for a particular U.S. placement. [5](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") | Listed [21](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability") | | [Employment practices liability](https://spot.insure/coverage/employment-practices) | Listed: Aon lists EPL for professional-services firms in a global practice; this does not establish eligibility for every U.S. employer or state. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed [21](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability") | | [Fiduciary liability](https://spot.insure/coverage/fiduciary) | Listed: Aon lists fiduciary liability within its global Professional Services Practice for law, accounting and consulting firms; U.S. availability and specific policy terms are not established. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed [21](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability") | | [General liability](https://spot.insure/coverage/general-liability) | Listed: Aon lists general liability within construction liability coverage areas in its global construction practice; this does not establish a standalone or U.S.-available line. [14](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") | Listed [29](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") | | [Intellectual property](https://spot.insure/coverage/intellectual-property) | Not listed | Listed [21](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability") | | [Kidnap and ransom](https://spot.insure/coverage/kidnap-ransom) | Listed: Aon lists kidnap and ransom within its global Professional Services Practice for law, accounting and consulting firms; U.S. availability and specific policy terms are not established. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed [21](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability") | | [Management liability](https://spot.insure/coverage/management-liability) | Listed: Aon describes management liability in its global Professional Services Practice as a partnership program for law, accounting and consulting firms, rather than a standalone line; U.S. availability and specific policy terms are not established. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Not listed | | [Media liability](https://spot.insure/coverage/media) | Not listed | Listed [21](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability") | | [Professional errors and omissions (E&O)](https://spot.insure/coverage/professional-errors-omissions) | Listed: Aon describes professional-liability/E&O services for law, accounting and consulting firms; a U.S. placement and any separate technology E&O terms remain to be confirmed. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed [29](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") | | [Surety bonds](https://spot.insure/coverage/surety-bonds) | Listed: Aon markets Commercial Surety globally and says availability depends on jurisdiction; the page does not establish U.S. placement availability. [10](https://www.aon.com/en/capabilities/risk-transfer/commercial-surety "Commercial Surety") | Listed [30](https://www.marshmma.com/us/solutions/surety.html "Surety") | | [Umbrella and excess liability](https://spot.insure/coverage/umbrella-excess) | Listed: Aon lists umbrella and excess within construction liability coverage areas; ask whether either applies to your project and jurisdiction. [14](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") | Not listed | | [Workers’ compensation](https://spot.insure/coverage/workers-compensation) | Listed: Aon lists workers compensation among global construction coverage areas; this does not establish state availability or a placement. [14](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") | Listed [29](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") | A listing may be arranged through an insurer or partner. “Not listed” means this catalogue has no separate offering recorded; ask the provider whether it can quote the coverage and request the policy terms. ## Optional Spot Service Handoff Spot can help prepare applications, coordinate brokers, and compare proposals. If that work is needed, collect the company's task, known deadline, current broker, and open questions for a [free consultation](https://spot.insure/pricing.md). The company decides what to buy; Spot does not automatically bind coverage. ## Where the Buying Paths Differ Aon describes its route this way: For certain U.S. Commercial Risk programs, Aon says it consults with the client about market conditions, insurers to approach and program strategy, helps prepare underwriting information and applications, and obtains the client’s instructions to bind specific programs based on Aon’s proposal. The client signs applications that require a signature. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") Marsh McLennan Agency describes its route this way: MMA lists general liability, commercial property, workers’ compensation, professional liability, commercial auto, and cyber liability for small businesses, and invites buyers to call for a personalized quote. It does not describe an online purchase or binding route. [29](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") The useful distinction is where the first submission goes and who continues with the account. Ask who gathers information, who can bind, which legal producer appears on the proposal, and who remains your day-to-day contact; a quote request alone does not establish an issued policy. ## Customer Fit and Published Product Menus Aon lists its business focus as Aon markets a dedicated Middle Market practice for mid-sized organizations and says it serves growing businesses across North America; the reviewed page states no numerical size cutoff or U.S.-only eligibility rule. [4](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients") Marsh McLennan Agency lists its business focus as Business insurance and employee health and benefits, with retirement, wealth, and private-client services also listed for the United States and Canada. [16](https://www.marshmma.com/us/mma/about-us.html "Who We Are") Match those stated audiences to your operations, locations, contracts, and loss history, then ask which practice or team would service the account. A stated focus is not an eligibility decision. The published catalogs list Aon lines not listed by Marsh McLennan Agency: management liability, umbrella and excess liability; Marsh McLennan Agency lines not listed by Aon: intellectual property, media. These differences do not establish that either company excludes a line or will quote your risk. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") [14](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [21](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability") [26](https://www.marshmma.com/us/solutions/property.html "Property Insurance") Both providers list builders risk, cargo transit, commercial auto, commercial property, crime, cyber, directors and officers, employment practices, fiduciary, general liability, kidnap ransom, professional E&O, surety bonds, workers’ compensation. Treat that overlap as a shortlist for a side-by-side proposal review, not proof of matching policy language. For each line, compare the named insurer, insured entities, limits, deductibles or retentions, exclusions, endorsements, retroactive dates where relevant, and state-specific terms. [14](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.aon.com/en/capabilities/risk-transfer/marine-insurance-and-risk-management "Marine Insurance and Risk Management") [26](https://www.marshmma.com/us/solutions/property.html "Property Insurance") [23](https://www.marshmma.com/us/solutions/international.html "International") ## Service and Quote Questions For Aon, published service information says: Aon says it consults with clients before placing or renewing coverage and, where applicable, administers the insurer relationship for selected programs, including billing, data reporting and negotiated requirements. The terms do not promise automatic renewal, a timetable, a specific market or a particular outcome. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") For Marsh McLennan Agency, it says: MMA says the Marsh Agency brand transition will not change clients’ account manager, team, or point of contact, and will not affect existing policies or programs; clients may see the legal-name change during renewals. This describes the rebrand transition, not MMA’s general renewal process. [27](https://www.marshmma.com/us/mma/rebranding-to-marsh-agency.html "Rebranding to Marsh Agency") Before binding, agree on routine endorsement requests, certificates, renewal timing, claim-notice instructions, and any fee or commission disclosure that applies to your account. Claims assistance or a service portal does not determine whether a loss is covered. For a useful quote comparison, request the same limits and relevant endorsements from both sides, then check the full forms and itemized premium, fees, taxes, and financing charges. Confirm any account-specific unknowns with the producer and insurer named on the proposal. ## Compare Services What each provider documents about the services you may need. | Criteria | Aon | Marsh McLennan Agency | | --- | --- | --- | | Business role | Aon’s U.S. Commercial Risk terms describe Commercial Risk Solutions U.S. as broker of record for certain insurance programs. Separate electronic-delivery terms name Aon Risk Services Companies, Inc. acting for itself and licensed brokerage subsidiaries to deliver arranged policies; the terms define an insurer as the policy issuer and risk bearer. These group-level descriptions do not identify the producer or authority for a particular placement. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") [2](https://www.aon.com/en/about/leadership-and-governance/aon-commercial-risk-us-electronic-disclosure-and-consent-terms "Aon Commercial Risk U.S. Electronic Disclosure and Consent Terms") (Evidence: Company-reported; scope: Company-reported U.S. Commercial Risk brokerage and electronic-delivery terms; certain programs only. No specific insured, licensed producer, appointment, policy issuer, state authority or placement was matched.; verified: 2026-09-29.) | As of 2026-09-28, Marsh’s US legal-entity page lists Marsh & McLennan Agency LLC as the current entity name for Marsh Agency (formerly MMA) and Marsh Agency LLC as proposed, with displayed state completion statuses marked TBD. Louisiana’s regulator lists Marsh & McLennan Agency LLC as a producer agency with active casualty, accident and health or sickness, life, property, and surplus-lines authorities through 2028-03-31. This is Louisiana-specific producer evidence, not evidence of an insurer role or nationwide licensing. [24](https://www.marsh.com/en/about/legal-entity-us-ca.html "Marsh legal entities") [15](https://www.ldi.la.gov/onlineservices/ProducerAdjusterSearch/Detail.aspx?LicenseNumber=499904&LicenseType=Producer+Agency "Producer / Adjuster Search: MARSH & MCLENNAN AGENCY LLC") (Evidence: Verified; scope: Current entity name and proposed legal-name transition as listed on Marsh’s US legal-entity page, plus producer-authority evidence for Louisiana only, accessed 2026-09-28. No other state licensing was audited; this record does not establish an insurer or underwriting role.; verified: 2026-09-28.)

Marsh McLennan Agency describes itself as a business of Marsh and lists business insurance, employee health and benefits, retirement and wealth, and private-client insurance services across the United States and Canada. [16](https://www.marshmma.com/us/mma/about-us.html "Who We Are") (Evidence: Company-reported; scope: Current MMA company description. Does not establish corporate ownership structure, the legal entity for a particular placement, or an insurer role.; verified: 2026-09-29.) | | Customer focus | Aon markets a dedicated Middle Market practice for mid-sized organizations and says it serves growing businesses across North America. The reviewed page gives no numerical size cutoff and does not establish U.S.-only eligibility; Aon’s broader global client statement describes the parent’s client base, not this practice’s eligibility rules. [4](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients") [3](https://www.sec.gov/Archives/edgar/data/315293/000162828026008116/aon-20251231.htm "Aon plc Form 10-K for the year ended December 31, 2025") (Evidence: Company-reported; scope: Company-reported marketing page, North America; no numerical revenue, employee-count, state or U.S.-only eligibility definition is stated.; verified: 2026-09-29.) | MMA describes Marsh Agency as a separate business unit serving as an advocate and broker for the middle market. [27](https://www.marshmma.com/us/mma/rebranding-to-marsh-agency.html "Rebranding to Marsh Agency") (Evidence: Company-reported; scope: Company-stated role and customer focus for the future Marsh Agency operating brand; not a revenue, size, or eligibility threshold.; verified: 2026-09-28.)

MMA’s US industry directory includes pages for construction, financial institutions, healthcare, manufacturing, real estate, and transportation and trucking. These are examples of stated sector focus, not a complete appetite or eligibility list. [22](https://www.marshmma.com/us/industries/view-all-industries.html "Insurance Services for All Industries") (Evidence: Company-reported; scope: Examples from MMA’s national US industry directory; the directory is evidence of stated sector focus, not a complete appetite or eligibility list.; verified: 2026-09-28.) | | Application process | For certain U.S. Commercial Risk programs, Aon says it consults with the client about market conditions, insurers to approach and program strategy, helps prepare underwriting information and applications, and obtains the client’s instructions to bind specific programs based on Aon’s proposal. The client signs applications that require a signature. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") (Evidence: Company-reported; scope: Company-reported contractual terms for certain U.S. Commercial Risk programs; not a universal workflow, online checkout claim, insurer role or guarantee that a quote can bind.; verified: 2026-09-29.) | MMA’s US small-business page lists general liability, commercial property, workers’ compensation, professional liability, commercial auto, and cyber liability, and invites buyers to call 833-256-4266 for a personalized quote. The page also contains a small-business specialist form, but its function and any online application, purchase, or binding route are not established by the page reviewed. [29](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") (Evidence: Company-reported; scope: US small-business landing page only. The phone invitation does not establish quote speed, eligibility, online purchase or binding; the embedded specialist form's function was not established.; verified: 2026-09-29.) | | Servicing and renewals | Aon says it consults with clients before placing or renewing coverage and, where applicable, administers the insurer relationship for selected programs, including billing, data reporting and negotiated requirements. The terms do not promise automatic renewal, a timetable, a specific market or a particular outcome. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") (Evidence: Company-reported; scope: Company-reported terms for selected U.S. Commercial Risk programs; administration varies where applicable and may be changed by written agreement.; verified: 2026-09-29.) | MMA says the Marsh Agency brand transition will not change clients’ account manager, team, or point of contact, and will not affect existing policies or programs; clients may see the legal-name change during renewals. This describes the rebrand transition, not MMA’s general renewal process. [27](https://www.marshmma.com/us/mma/rebranding-to-marsh-agency.html "Rebranding to Marsh Agency") (Evidence: Company-reported; scope: Only the announced Marsh Agency rebrand and its stated effect on existing clients; this does not document MMA’s general renewal workflow, renewal service level, or policy terms.; verified: 2026-09-28.)

MMA’s Tampa office page lists InsurLink for policy and endorsement access, CSR24 for certificates, carrier contact information for commercial and personal-lines claims, and a local-consultant contact route. [31](https://www.marshmma.com/us/locations/florida/tampa.html "Tampa, Florida") (Evidence: Company-reported; scope: Services and client tools listed on the Tampa, Florida office page only. The claims listing provides carrier contact information and does not establish that MMA adjusts claims.; verified: 2026-09-28.) | | Claims assistance | Under Aon’s U.S. brokerage terms, the client is responsible for directly notifying insurers as its policies require unless a separate signed agreement says otherwise; Aon says it does not assume that notice or monitoring duty without a separate written agreement. This allocation does not determine whether Aon separately offers or agrees to claims advocacy or other claims-related services. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") [5](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") [7](https://www.aon.com/en/capabilities/cyber-resilience "Cyber Risk") (Evidence: Company-reported; scope: Company-reported contractual allocation for covered U.S. Commercial Risk services; policy terms and any separate written agreement control. Aon separately describes claims advocacy on its D&O and cyber pages.; verified: 2026-09-29.) | On its business-interruption page, MMA says it will advocate with insurers for clients if complex claim issues arise. This is a company-reported service statement; it does not establish claim outcomes or an adjusting/payment role. [17](https://www.marshmma.com/us/solutions/business-interruption-insurance.html "Business Interruption Insurance") (Evidence: Company-reported; scope: Company-described support for complex claims in the business-income and contingent-business-interruption page context; not a promise of claim outcomes or evidence that MMA adjusts or pays claims.; verified: 2026-09-28.) | ## Related Reading - [What Is Aon?](https://spot.insure/insurance-providers/aon) - [What Is Marsh McLennan Agency?](https://spot.insure/insurance-providers/marsh-mclennan-agency) ## Related Comparisons - [AIG vs Aon](https://spot.insure/compare/aig-vs-aon) - [AIG vs Marsh McLennan Agency](https://spot.insure/compare/aig-vs-marsh-mclennan-agency) - [Alliance Risk vs Aon](https://spot.insure/compare/alliance-risk-vs-aon) - [Alliance Risk vs Marsh McLennan Agency](https://spot.insure/compare/alliance-risk-vs-marsh-mclennan-agency) - [Amelia Risk vs Aon](https://spot.insure/compare/amelia-risk-vs-aon) - [Amelia Risk vs Marsh McLennan Agency](https://spot.insure/compare/amelia-risk-vs-marsh-mclennan-agency) - [Aon vs Armilla](https://spot.insure/compare/aon-vs-armilla) - [Aon vs At-Bay](https://spot.insure/compare/aon-vs-at-bay) - [Aon vs The Baldwin Group](https://spot.insure/compare/aon-vs-baldwin) - [Aon vs Beazley](https://spot.insure/compare/aon-vs-beazley) - [Aon vs Berkshire Hathaway Specialty Insurance](https://spot.insure/compare/aon-vs-berkshire-hathaway-specialty-insurance) - [Aon vs biBerk](https://spot.insure/compare/aon-vs-biberk) - [Aon vs CFC](https://spot.insure/compare/aon-vs-cfc) - [Aon vs Chubb](https://spot.insure/compare/aon-vs-chubb) - [Aon vs CNA](https://spot.insure/compare/aon-vs-cna) - [Aon vs Coalition](https://spot.insure/compare/aon-vs-coalition) - [Aon vs Corgi](https://spot.insure/compare/aon-vs-corgi) - [Aon vs Coterie Insurance](https://spot.insure/compare/aon-vs-coterie) - [Aon vs Counterpart](https://spot.insure/compare/aon-vs-counterpart) - [Aon vs Coverdash](https://spot.insure/compare/aon-vs-coverdash) - [Aon vs Cowbell](https://spot.insure/compare/aon-vs-cowbell) - [Aon vs Embroker](https://spot.insure/compare/aon-vs-embroker) - [Aon vs Founder Shield](https://spot.insure/compare/aon-vs-foundershield) - [Armilla vs Marsh McLennan Agency](https://spot.insure/compare/armilla-vs-marsh-mclennan-agency) - [At-Bay vs Marsh McLennan Agency](https://spot.insure/compare/at-bay-vs-marsh-mclennan-agency) - [The Baldwin Group vs Marsh McLennan Agency](https://spot.insure/compare/baldwin-vs-marsh-mclennan-agency) - [Beazley vs Marsh McLennan Agency](https://spot.insure/compare/beazley-vs-marsh-mclennan-agency) - [Berkshire Hathaway Specialty Insurance vs Marsh McLennan Agency](https://spot.insure/compare/berkshire-hathaway-specialty-insurance-vs-marsh-mclennan-agency) - [biBerk vs Marsh McLennan Agency](https://spot.insure/compare/biberk-vs-marsh-mclennan-agency) - [CFC vs Marsh McLennan Agency](https://spot.insure/compare/cfc-vs-marsh-mclennan-agency) - [Chubb vs Marsh McLennan Agency](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency) - [CNA vs Marsh McLennan Agency](https://spot.insure/compare/cna-vs-marsh-mclennan-agency) - [Coalition vs Marsh McLennan Agency](https://spot.insure/compare/coalition-vs-marsh-mclennan-agency) - [Corgi vs Marsh McLennan Agency](https://spot.insure/compare/corgi-vs-marsh-mclennan-agency) - [Coterie Insurance vs Marsh McLennan Agency](https://spot.insure/compare/coterie-vs-marsh-mclennan-agency) - [Counterpart vs Marsh McLennan Agency](https://spot.insure/compare/counterpart-vs-marsh-mclennan-agency) - [Coverdash vs Marsh McLennan Agency](https://spot.insure/compare/coverdash-vs-marsh-mclennan-agency) - [Cowbell vs Marsh McLennan Agency](https://spot.insure/compare/cowbell-vs-marsh-mclennan-agency) - [Embroker vs Marsh McLennan Agency](https://spot.insure/compare/embroker-vs-marsh-mclennan-agency) ## Sources ### [Aon Official Website](https://www.aon.com/) 1. [Commercial Risk Solutions U.S. Brokerage Terms of Service](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us). Aon; Lines 120–127: certain-program broker-of-record scope, consultation, application assistance, client signature and bind instruction, and account administration; lines 140–147: variable and contingent compensation, potential placement incentive, and client request route; lines 206–213: no price guarantee and surplus-lines limitations; lines 229–231: client insurer-notice duty unless separately agreed. Accessed 2026-09-29. 2. [Aon Commercial Risk U.S. Electronic Disclosure and Consent Terms](https://www.aon.com/en/about/leadership-and-governance/aon-commercial-risk-us-electronic-disclosure-and-consent-terms). Aon; Lines 120–125: Aon Risk Services Companies, Inc. acting for itself and licensed brokerage subsidiaries in electronic delivery; insurer is defined as issuer and risk bearer. The passage does not identify a producing entity or insurer for a particular placement. Accessed 2026-09-28. 3. [Aon plc Form 10-K for the year ended December 31, 2025](https://www.sec.gov/Archives/edgar/data/315293/000162828026008116/aon-20251231.htm). Aon plc / U.S. Securities and Exchange Commission; Cover lines 23–34: Aon plc is incorporated in Ireland and gives Dublin as principal executive office; lines 261–263: global client breadth; lines 271–273 and segment discussion: company-reported Commercial Risk brokerage and risk-consulting operations. Filing is parent-level evidence, not placement producer, authority or insurer evidence. Accessed 2026-09-29. 4. [Middle Market Clients](https://www.aon.com/en/capabilities/middle-market-clients). Aon; Lines 125–132: mid-sized organizations and middle-market framing; lines 165–173: dedicated practice and North America statement; lines 188–224: Commercial Risk capabilities. No numeric company-size cutoff or U.S.-only eligibility rule is stated on the reviewed page. Accessed 2026-09-29. 5. [Directors’ and Officers’ (D&O) Liability Insurance](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance). Aon; Lines 135–160: general covered allegations and Side A, B and C scenarios, including public/private differences; lines 171–185: insurer-selection analytics, brokerage/claims-team collaboration and management-liability specialization. Product explanation and company-reported services; not an Aon-issued policy or quote. Accessed 2026-09-29. 6. [Professional Services Practice | Insurance Broking & Risk Management](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice). Aon; Lines 125–128: global professional-services team and named law, accounting and consulting firm audience; lines 131–147: professional-liability/E&O offering and terminology; lines 151–176: cyber and EPL offerings, including management liability described at lines 158–163 as a partnership program/category; lines 180–189: professional-services P&C listing, including crime, fiduciary, kidnap and ransom, and automobile liability. “Loss Prevention” section (directly inspected passage at lines 209–212) conditions law-firm loss prevention on Aon broking of lawyers’ professional liability. Global practice page; no state-specific placement schedule. Accessed 2026-09-29. 7. [Cyber Risk](https://www.aon.com/en/capabilities/cyber-resilience). Aon; Lines 194–205: cyber risk financing and cyber insurance; lines 206–230: claims advocacy/preparation and third-party incident-response providers, separate client contracts, no performance guarantee, and possible referral remuneration. Company-reported global service description. Accessed 2026-09-29. 8. [Property Risk Management](https://www.aon.com/en/capabilities/risk-management/property-risk-management). Aon; Lines 132–140: property/buildings/contents and possible business-interruption cover, broker team services; lines 148–159: rates, retentions, limits, deductibles, benchmarking and U.S.-available Property Risk Analyzer; lines 161–168: global market access and alternate risk transfer. Tool availability does not establish placement availability or authority by state. Accessed 2026-09-29. 9. [Marine Insurance and Risk Management](https://www.aon.com/en/capabilities/risk-transfer/marine-insurance-and-risk-management). Aon; Lines 123–126: global marine practice, customer examples and marine claims/risk services; lines 155–175: cargo offerings including project cargo, general cargo, stock throughput, excess storage and freight/logistics. No U.S. placement terms, insurer, limits or state authority specified. Accessed 2026-09-29. 10. [Commercial Surety](https://www.aon.com/en/capabilities/risk-transfer/commercial-surety). Aon; Lines 125–127: commercial surety bond description and three parties; lines 190–210: Aon says it approaches the surety market globally and describes its brokerage support, with offerings depending on jurisdiction; lines 211–222: examples of bond types. Global company marketing; no U.S. producing entity, state authority, issuer or placement terms. Accessed 2026-09-29. 11. [About | Aon](https://www.aon.com/en/about). Aon; Aon’s company overview and Our Capabilities list distinguish Risk Capital from Human Capital and describe group-wide capabilities. General company identity context; not placement, authority or insurer evidence. Accessed 2026-09-28. 12. [Broking and Risk Transfer | Aon](https://www.aon.com/en/capabilities/risk-transfer). Aon; Explore Our Risk Transfer Offerings; Property & Casualty, Specialty, Management Liability and industry listings. Broad catalogue only; not sufficient for a dedicated line record by itself. Accessed 2026-09-28. 13. [Financial and Executive Risks | Insurance Broking & Risk Management](https://www.aon.com/en/capabilities/risk-transfer/financial-and-executive-risks). Aon; Financial Services Group Overview; D&O, fiduciary, EPL and crime references plus policy design and insurer market knowledge. Broad category/source context; not sufficient by itself to establish a separate U.S. product. Accessed 2026-09-28. 14. [Construction and Infrastructure Insurance and Risk Management](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management). Aon; Lines 125–126: global construction practice designing and placing risk solutions; lines 137–156: industry-specific property, casualty, construction professional liability, subcontractor default and construction surety offerings; lines 167–195: global coverage areas explicitly list Builders Risk, general/umbrella/excess liability within construction liability, workers compensation and surety among other categories. These are construction-practice marketing statements; page does not provide U.S. state or placement availability for each line. Accessed 2026-09-29. ### [Marsh McLennan Agency Official Website](https://www.marshmma.com/us/mma/about-us.html) 15. [Producer / Adjuster Search: MARSH & MCLENNAN AGENCY LLC](https://www.ldi.la.gov/onlineservices/ProducerAdjusterSearch/Detail.aspx?LicenseNumber=499904&LicenseType=Producer+Agency). Louisiana Department of Insurance; Producer Agency Detail, lines 7-49: entity, producer-agency classification, license number, authorities and validity through 2028-03-31; lines 53-57: historical 2010 lapse/resume entries; lines 69-72: entity-record actions display. Accessed 2026-09-28. 16. [Who We Are](https://www.marshmma.com/us/mma/about-us.html). Marsh McLennan Agency; Lines 193-195: ‘a business of Marsh’ and company-listed service lines across US and Canada. This does not establish the legal entity for an account, corporate ownership chart, or insurer role. Accessed 2026-09-29. 17. [Business Interruption Insurance](https://www.marshmma.com/us/solutions/business-interruption-insurance.html). Marsh McLennan Agency; Accepted inspection lines 224-226: company says it will advocate with insurers on complex claim issues. No outcomes, adjustment/payment role, or insurer identity established. Accessed 2026-09-28. 18. [Casualty](https://www.marshmma.com/us/solutions/casualty.html). Marsh McLennan Agency; Lines 203-205 and 211-224: casualty advisory, claims advocacy, risk analytics and workers’ compensation. No adjusting or paying role established. Accessed 2026-09-29. 19. [Cyber](https://www.marshmma.com/us/solutions/cyber.html). Marsh McLennan Agency; Lines 205-207: network security, privacy, technology and emerging cyber risks; lines 226-228: prepare, mitigate, respond, recover, claims advocacy and carrier liaison. Company-reported support, not outcomes or insurer identity. Accessed 2026-09-29. 20. [US and Canada Legal Entities](https://www.marsh.com/en/about/legal-entity-us-ca.html). Marsh; Accepted inspection lines 528-587: current MMA entity Marsh & McLennan Agency LLC; Marsh Agency LLC proposed; displayed state statuses TBD. Accessed 2026-09-28. 21. [Executive and Professional Liability](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html). Marsh McLennan Agency; Lines 204-210 name D&O, E&O, EPL, commercial crime/fidelity, cyber, fiduciary, media, IP, architects and engineers, lawyers professional, kidnap and ransom; lines 211-213 explain D&O; following section explains EPL. Lists do not establish policy terms. Accessed 2026-09-29. 22. [Insurance Services for All Industries](https://www.marshmma.com/us/industries/view-all-industries.html). Marsh McLennan Agency; National US industry directory, lines 209-252; examples include construction (219), financial institutions (224), healthcare (229), manufacturing (236), real estate (243), and transportation and trucking (252). Accessed 2026-09-28. 23. [International](https://www.marshmma.com/us/solutions/international.html). Marsh McLennan Agency; Lines 204-206 and 228-231: international placement; business travel accident, control master, foreign package, K&R, political risk/trade credit, surety, marine cargo. Not a domestic availability guarantee. Accessed 2026-09-29. 24. [Marsh legal entities](https://www.marsh.com/en/about/legal-entity-us-ca.html). Marsh; Marsh Agency formerly known as MMA, US entities and proposed-name status, lines 528-587: current Marsh & McLennan Agency LLC, proposed Marsh Agency LLC, listed state statuses TBD. Accessed 2026-09-28. 25. [Producer/Adjuster Search — producer agency detail](https://www.ldi.la.gov/onlineservices/ProducerAdjusterSearch/Detail.aspx?LicenseNumber=499904&LicenseType=Producer+Agency). Louisiana Department of Insurance; Accepted inspection lines 7-49 and 53-57: Marsh & McLennan Agency LLC producer agency and named Louisiana authorities through 2028-03-31, including historical lapse/resume entries. Louisiana only; distinct from Marsh USA LLC/NPN 27658. Accessed 2026-09-28. 26. [Property Insurance](https://www.marshmma.com/us/solutions/property.html). Marsh McLennan Agency; Lines 205-210 describe commercial property and physical assets; property page coverage section also lists builders’ risk. Company marketing only; no policy wording, limits, exclusions, insurer, or eligibility. Accessed 2026-09-29. 27. [Rebranding to Marsh Agency](https://www.marshmma.com/us/mma/rebranding-to-marsh-agency.html). Marsh McLennan Agency; Accepted repaired inspection lines 215-224: account/team/contact and existing policy continuity through transition, legal name may appear at renewal. Transition statement only; not general renewal workflow. Accessed 2026-09-29. 28. [Business Insurance](https://www.marshmma.com/us/services/business-insurance.html). Marsh McLennan Agency; ‘We do our homework’: research of organization, industry, market and people; says it works with a wide variety of carriers. No carrier appointments, shares, terms, compensation, or buyer-specific insurer named. Accessed 2026-09-29. 29. [Small Business Insurance Solutions](https://www.marshmma.com/us/solutions/small-business.html). Marsh McLennan Agency; Lines 205-207: small-business audience and call invitation; lines 224-249 list six coverage categories and short descriptions; line 264 is an embedded form whose function is not stated. No form submitted. Accessed 2026-09-29. 30. [Surety](https://www.marshmma.com/us/solutions/surety.html). Marsh McLennan Agency; Lines 205-207 and 224-233: surety, contract/commercial surety, and license/permit bonds. No surety carrier, collateral, price, or issuance time established. Accessed 2026-09-29. 31. [Tampa, Florida](https://www.marshmma.com/us/locations/florida/tampa.html). Marsh McLennan Agency; Accepted repaired inspection lines 252-289: InsurLink policy/endorsement access, CSR24 certificates, carrier contacts for claims, consultant contact. Tampa only; does not establish adjusting role. Accessed 2026-09-29. 32. [Thompkins Masonic Insurance Program](https://mma.marshmma.com/mmaprograms/thompkins-masonic). Marsh McLennan Agency / MMA Programs; Provider page, lines 120–127: body says “Thompkins Masonic Insurance Program, a Marsh & McLennan Insurance Agency LLC company, is licensed under California License #OH18131”; line 127 says MMA Programs is a division of Marsh & McLennan Agency LLC. Page footer, line 161, instead prints “d/b/a in California as Marsh & McLennan Insurance Agency LLC; CA Insurance Lic: 0H18131.” The page itself therefore renders the identifier in two different ways. Accessed 2026-09-29. Updated 2026-09-30. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source. ## Agent and Developer Resources - [Markdown page](https://spot.insure/compare/aon-vs-marsh-mclennan-agency.md) - [Developer resources](https://spot.insure/developers) - [Public MCP server](https://spot.insure/mcp) - [MCP server manifest](https://spot.insure/server.json) - [OpenAPI description](https://spot.insure/openapi.json) - [Public page index](https://spot.insure/llms.txt)