--- title: "Alliance Risk vs Aon: Professional Liability (E&O) Insurance" description: "Alliance Risk lists E&O triggers and exclusions for professional firms; Aon describes tailored professional-liability structures for law, accounting and consulting practices." canonical: "https://spot.insure/compare/alliance-risk-vs-aon/professional-errors-omissions" page-type: "line-comparison" updated-at: "2026-09-30" comparison-pair: "alliance-risk-vs-aon" provider-a: "alliance-risk" provider-b: "aon" coverage-line: "professional-errors-omissions" --- 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/alliance-risk-vs-aon/professional-errors-omissions) ## Agent Guide **What this page is:** Focused comparison of Alliance Risk and Aon for Professional Liability (E&O) Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources. **Use this page when:** Cite or fetch this for Professional Liability (E&O) Insurance questions about Alliance Risk versus Aon. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide. **Questions this page answers:** - Alliance Risk vs Aon for Professional Liability (E&O) Insurance: how do they differ? - Which is better for Professional Liability (E&O) Insurance, Alliance Risk or Aon? - What does Alliance Risk or Aon publish about Professional Liability (E&O) Insurance (limits, eligibility, claims, add-ons)? - What should I confirm in a quote for Professional Liability (E&O) Insurance from Alliance Risk or Aon? **Key facts:** - Line: Professional Liability (E&O) Insurance. Providers: Alliance Risk and Aon. - Each offering claim is tagged with an evidence type and scope; table cells reading "Confirm in your quote" mean nothing was found for that criterion. - Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL. **Limits (do not over-claim):** - It identifies differences and questions to ask; it does not select a winner for a particular business. - "Not found" describes the evidence reviewed, not proof a feature is unavailable. - Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here. **Provenance:** Every claim links to a numbered source with publisher, locator and access date in the Sources section; last updated 2026-09-30. Editorial policy: /editorial-policy. **Related pages:** - [Alliance Risk vs Aon](https://spot.insure/compare/alliance-risk-vs-aon) — parent: all coverage lines for this pair - [Professional Liability (E&O) Insurance guide](https://spot.insure/coverage/professional-errors-omissions) — coverage explainer for this line - [Alliance Risk profile](https://spot.insure/insurance-providers/alliance-risk) — provider profile (evidence) - [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence) - [Alliance Risk vs Aon Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-aon/commercial-property) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Aon Crime Insurance](https://spot.insure/compare/alliance-risk-vs-aon/crime) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Aon Cyber Insurance](https://spot.insure/compare/alliance-risk-vs-aon/cyber) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Aon D&O Insurance](https://spot.insure/compare/alliance-risk-vs-aon/directors-officers) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Aon Employment Practices Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/employment-practices) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Aon Fiduciary Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/fiduciary) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Aon General Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/general-liability) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Aon Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/management-liability) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/alliance-risk-vs-aon/workers-compensation) — sibling comparison (other line, or other pair for this line) - [AIG vs Alliance Risk Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-alliance-risk/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [AIG vs Aon Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-aon/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-at-bay/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Beazley Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-beazley/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Berkshire Hathaway Specialty Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-berkshire-hathaway-specialty-insurance/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs CFC Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-cfc/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) # Alliance Risk vs Aon: How Do They Compare for Professional Liability (E&O) Insurance? Alliance Risk lists E&O triggers and exclusions for professional firms; Aon describes tailored professional-liability structures for law, accounting and consulting practices. ## Research Scope and Use Use this comparison to evaluate Alliance Risk and Aon for Professional Liability (E&O) Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote. ## Summary Alliance Risk describes E&O for a broad group of advisory and professional firms, including common covered allegations and exclusions. Aon says it tailors professional-liability structures for law, accounting and consulting firms. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") ## What Is Alliance Risk? Alliance Risk suits tech startups from pre-seed through IPO that want a broker to review their tech E&O policy for free and shop specialist insurers; if you want to buy online in minutes, use a digital insurer. Quotes take 24 hours to ten business days, depending on your risk. [1](https://joinalliancerisk.com/technology-insurance/ "Technology Insurance") [2](https://joinalliancerisk.com/technology-errors-omissions-insurance-tech-eo/ "Tech E&O Insurance") [3](https://joinalliancerisk.com/get-a-quote/ "Get a Quote") [Alliance Risk profile](https://spot.insure/insurance-providers/alliance-risk) ## What Is Aon? Aon’s U.S. Commercial Risk terms describe brokerage for certain insurance programs, while its Middle Market page describes a dedicated practice for mid-sized organizations across North America. The public materials reviewed do not identify the licensed producer or insurer for a particular placement. Ask which entity will produce each line and which insurer will issue the policy; request jurisdiction details for the proposed placement and ask how compensation and claim notice work for your account. [5](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") [6](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients") [Aon profile](https://spot.insure/insurance-providers/aon) ## What Is Professional Errors and Omissions (E&O) Insurance? Professional liability can help pay defense costs and covered losses when a client says your advice or service caused financial harm. If customers rely on your work, list every service you provide and check the claims-made reporting and prior-work terms. [8](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [9](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [10](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [11](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance") ## Key Differences in Professional Liability (E&O) Insurance ### Coverage Structure and Evidence Alliance Risk lists negligent acts or omissions, breach of contract, misrepresentation and missed deadlines as typical E&O allegations, while calling out bodily injury, cyber incidents, employment disputes and known claims as exclusions routed to other lines. Aon says its professional-services practice tailors professional-liability coverage structures to a firm’s needs but does not publish comparable claim examples or exclusions. Buyers should use Alliance Risk’s list to test the actual form and ask Aon to identify its proposed coverage triggers and carve-outs. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") ### Buyer Fit and Placement The stated audience is also distinct: Alliance Risk names consultants, accountants, architects, real-estate and insurance professionals, technology advisers, healthcare providers and more; Aon names law, accounting and consulting firms. Alliance Risk gives indicative premium ranges by firm size but no limits, and Aon provides no specific pricing or limits. Neither names an account carrier. Compare quote-level limit, retention, insurer and exclusions rather than the broad brokerage descriptions. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") ## What to Confirm in Professional Liability (E&O) Insurance Quotes - Ask Alliance Risk to confirm whether cyber, prior claims and contract-breach allegations are excluded in the proposed form. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") - Ask Aon for its covered professional services definition, exclusions, limit and carrier. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") ## Offering Details | Criteria | Alliance Risk Professional Liability Insurance | Aon Professional Liability / E&O brokerage and risk-advisory offering | | --- | --- | --- | | Role in This Line | Alliance Risk places professional liability (errors and omissions, or E&O) coverage as a broker, saying it backs placements with risk-specific underwriting input and carrier partnerships rather than underwriting the policy itself. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page..) | Aon presents Professional Liability / E&O as a line its Professional Services Practice helps arrange or advise on for professional-service firms. Aon is describing a global brokerage and advisory service, not issuing the underlying policy. The producing legal entity and carrier for any particular placement are not named on this page. [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Aon’s global professional-services practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement..) | | Issuing Insurer | The reviewed professional liability page does not name the insurer that would issue a policy; it refers generally to 'strong carrier partnerships' without identifying a specific carrier. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Not publicly disclosed; scope: Professional liability product page as read on 2026-09-23..) | The reviewed practice page does not name the insurer or producing legal entity for a specific placement. Ask for both on the quote and binder. [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Not found in reviewed sources; scope: Aon’s global practice page as reviewed 2026-09-30; no state-specific placement schedule or buyer quote was reviewed. This does not establish that Aon cannot arrange a placement..) | | Who It’s For | Alliance Risk targets professional liability at consultants and advisory firms, accountants and tax professionals, architects and engineers, real estate and insurance agents and brokers, marketing and PR agencies, IT and technology consultants, healthcare providers, and financial planners and investment advisors. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page; eligibility for a particular company depends on underwriting..) | Aon identifies law, accounting and consulting firms as the audience for its global Professional Services Practice. That audience scope does not establish eligibility for every firm or other business. [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Audience described for Aon’s global professional-services practice. It does not establish U.S. state availability or underwriting eligibility for a placement..) | | Coverage Features | Alliance Risk lists negligent acts or omissions, breach of contract, misrepresentation, and missed deadlines as typically covered, and says bodily injury or property damage, intentional wrongdoing or fraud, employment disputes, cyber incidents, and prior known claims are excluded and belong to other lines such as general liability, EPLI or cyber liability. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page; coverage and exclusions described in general terms, subject to the policy as issued..) | Aon describes professional liability as addressing professional-services firms’ liability exposure and says it tailors coverage structures to a firm’s needs. It identifies E&O as a commonly used name for professional-liability insurance; actual policy terms are not stated. [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Aon’s marketing description of the brokerage/coverage area. The page is not the insurer’s policy form and does not establish an insured's entitlement to coverage..) | | Limits and Retentions | The reviewed professional liability page gives cost ranges by firm size (for example, solo practitioners at $500-$3,000 a year up to mid-sized to large firms at $10,000-$50,000-plus) but does not publish specific coverage limits, retentions or deductible amounts for this line. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Not found in reviewed sources; scope: Professional liability product page as read on 2026-09-23; cost figures are illustrative premium estimates, not published limits..) | The reviewed page does not state a buyer-specific limit, retention, deductible or other placement terms. Confirm these in the quote, bond or issued policy. [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Not publicly disclosed; scope: Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed..) | | Risk Services | Alliance Risk describes its approach to professional liability as including industry-specific risk reviews, claims-trend analysis, customized policy language, review of client contracts to limit personal exposure, and expertise structuring claims-made policies including tail coverage, prior acts and retroactive dates. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page, Our Approach to Professional Liability and The Alliance Risk Difference sections..) | Aon says its professional-services advisors use industry knowledge, insights, data and tools to support risk-management and human-capital decisions. This is a company-described advisory service, not a claim outcome or policy benefit. [7](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated..) | | How to Apply | The professional liability page's only application route is a generic 'Get a quote' request; it does not list the specific submission information Alliance Risk asks for on this line, unlike its D&O, EPLI and fiduciary product pages. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Not found in reviewed sources; scope: Professional liability product page as read on 2026-09-23..) | Confirm in your quote. | | Claims Support | Alliance Risk says professional liability clients get access to a legal network and claims experts who understand the client's industry, providing a defense strategy if a claim arises. [4](https://joinalliancerisk.com/professional-liability-business-insurance/ "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page, The Alliance Risk Difference section..) | Confirm in your quote. | ## Full Comparison - [Alliance Risk vs Aon](https://spot.insure/compare/alliance-risk-vs-aon): all coverage lines, business roles, service and claims. - [What Is Professional Errors and Omissions (E&O) Insurance?](https://spot.insure/coverage/professional-errors-omissions): Professional liability can help pay covered defense costs and losses when a client says your advice or service caused financial harm; check services and reporting terms. - [Alliance Risk vs Aon Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-aon/commercial-property) - [Alliance Risk vs Aon Crime Insurance](https://spot.insure/compare/alliance-risk-vs-aon/crime) - [Alliance Risk vs Aon Cyber Insurance](https://spot.insure/compare/alliance-risk-vs-aon/cyber) - [Alliance Risk vs Aon D&O Insurance](https://spot.insure/compare/alliance-risk-vs-aon/directors-officers) - [Alliance Risk vs Aon Employment Practices Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/employment-practices) - [Alliance Risk vs Aon Fiduciary Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/fiduciary) - [Alliance Risk vs Aon General Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/general-liability) - [Alliance Risk vs Aon Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/management-liability) - [Alliance Risk vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/alliance-risk-vs-aon/workers-compensation) - [AIG vs Alliance Risk Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-alliance-risk/professional-errors-omissions) - [AIG vs Aon Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-aon/professional-errors-omissions) - [Alliance Risk vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-at-bay/professional-errors-omissions) - [Alliance Risk vs Beazley Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-beazley/professional-errors-omissions) - [Alliance Risk vs Berkshire Hathaway Specialty Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-berkshire-hathaway-specialty-insurance/professional-errors-omissions) - [Alliance Risk vs CFC Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-cfc/professional-errors-omissions) ## Sources ### Alliance Risk 1. [Technology Insurance](https://joinalliancerisk.com/technology-insurance/). Alliance Risk; What is Technology Insurance?; Types of Technology; Types of Coverage; startup placement introduction; quote documents and process. Accessed 2026-09-16. 2. [Tech E&O Insurance](https://joinalliancerisk.com/technology-errors-omissions-insurance-tech-eo/). Alliance Risk; Opening placement description; Get Your Tech E&O Risk Review; What We Need for Your Quote; Policy Review. Accessed 2026-09-16. 3. [Get a Quote](https://joinalliancerisk.com/get-a-quote/). Alliance Risk; Request form; Prefer to Call?; Why Alliance Risk? section. Accessed 2026-09-16. 4. [Professional Liability Insurance](https://joinalliancerisk.com/professional-liability-business-insurance/). Alliance Risk; Professional Liability Insurance That Safeguards Your Expertise; Our Approach to Professional Liability; The Alliance Risk Difference; What Is Professional Liability Insurance?; What Does/Doesn't Professional Liability Insurance Cover?; How Much Professional Liability Insurance Cost?. Accessed 2026-09-23. ### Aon 5. [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. 6. [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. 7. [Professional Services Practice](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice). Aon; Named professional-services audiences and global advisory role, lines 125–128; line offerings and explanations lines 131–190; contact link lines 120–122. Global practice page; no U.S. state or account-specific placement schedule.. Accessed 2026-09-30. ### Professional Liability (E&O) Insurance Guide 8. [FAQ: Professional liability insurance](https://www.tdi.texas.gov/commercial/pl-faq.html). Texas Department of Insurance; What’s professional liability coverage?; What types of damages…; What’s general liability insurance?; Do I need professional liability… if I have general liability…?; Is professional liability insurance required?; Can a client require…?; What’s the difference between occurrence policies and claims-made policies. Accessed 2026-09-16. 9. [Professional liability insurance](https://www.iii.org/article/professional-liability-insurance). Insurance Information Institute; Opening paragraphs (professional services/advice and E&O name); Claims not covered by general liability; What types of businesses need professional liability insurance?; What’s covered… and what’s not (claims-made versus occurrence, defense and judgments, non-financial/intentional limits, BOP/in-home exclusion). Accessed 2026-09-16. 10. [Get business insurance](https://www.sba.gov/counseling/launch-your-business/#business-insurance). U.S. Small Business Administration; Six common types of business insurance table. Accessed 2026-09-16. 11. [Professional Liability – US Direct Errors and Omissions Insurance](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf). Hiscox Inc. specimen; About this Policy / Coverage for Claims Made Against You; I.A Insuring Agreement; I.B Defense; I.C Settlement; II.A Notice of Claims; II.C Optional Extended Reporting Period; III.A, III.K, III.M, III.R, III.S Exclusions; IV.A–B Limits and Deductible; VI.O Professional Services; VI.U Wrongful Act. Accessed 2026-09-16. Updated 2026-09-30. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source. ## Alliance Risk Reviews Review Score: not enough ratings. Alliance Risk has no customer ratings on the review sites we checked, so there's no Review Score yet. That says nothing bad about the company; it means you'll need to ask for references. Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/alliance-risk/reviews). ## 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). ## Agent and Developer Resources - [Markdown page](https://spot.insure/compare/alliance-risk-vs-aon/professional-errors-omissions.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)