---
title: "Aon vs Cowbell: Management Liability Insurance"
description: "Aon advises professional partnerships on management liability; Cowbell distributes Zurich Select Plus modules for smaller private businesses through wholesalers."
canonical: "https://spot.insure/compare/aon-vs-cowbell/management-liability"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-cowbell"
provider-a: "aon"
provider-b: "cowbell"
coverage-line: "management-liability"
---

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-cowbell/management-liability)

## Agent Guide

**What this page is:** Focused comparison of Aon and Cowbell for Management Liability 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 Management Liability Insurance questions about Aon versus Cowbell. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Aon vs Cowbell for Management Liability Insurance: how do they differ?
- Which is better for Management Liability Insurance, Aon or Cowbell?
- What does Aon or Cowbell publish about Management Liability Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Management Liability Insurance from Aon or Cowbell?

**Key facts:**
- Line: Management Liability Insurance. Providers: Aon and Cowbell.
- 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:**
- [Aon vs Cowbell](https://spot.insure/compare/aon-vs-cowbell) — parent: all coverage lines for this pair
- [Management Liability Insurance guide](https://spot.insure/coverage/management-liability) — coverage explainer for this line
- [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence)
- [Cowbell profile](https://spot.insure/insurance-providers/cowbell) — provider profile (evidence)
- [Aon vs Cowbell Crime Insurance](https://spot.insure/compare/aon-vs-cowbell/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Cowbell Cyber Insurance](https://spot.insure/compare/aon-vs-cowbell/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Cowbell D&O Insurance](https://spot.insure/compare/aon-vs-cowbell/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs Cowbell Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Cowbell Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/fiduciary) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon Management Liability Insurance](https://spot.insure/compare/aig-vs-aon/management-liability) — sibling comparison (other line, or other pair for this line)
- [AIG vs Cowbell Management Liability Insurance](https://spot.insure/compare/aig-vs-cowbell/management-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 Cowbell Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-cowbell/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs The Baldwin Group Management Liability Insurance](https://spot.insure/compare/aon-vs-baldwin/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Beazley Management Liability Insurance](https://spot.insure/compare/aon-vs-beazley/management-liability) — sibling comparison (other line, or other pair for this line)

# Aon vs Cowbell: How Do They Compare for Management Liability Insurance?

Aon advises professional partnerships on management liability; Cowbell distributes Zurich Select Plus modules for smaller private businesses through wholesalers.

## Research Scope and Use

Use this comparison to evaluate Aon and Cowbell for Management Liability 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

Aon describes management-liability program design for professional partnerships. Cowbell provides wholesale access to Zurich Select Plus, a four-module suite for private businesses under 250 employees and $50 million in assets. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus")

## 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. [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/capabilities/middle-market-clients "Middle Market Clients")

[Aon profile](https://spot.insure/insurance-providers/aon)

## What Is Cowbell Insurance?

Cowbell suits small and midsize businesses seeking cyber options by company size, with technology E&O and Zurich management-liability options also available; firms needing broad commercial coverage should compare a full-service broker. Some security services cost extra. [4](https://cowbell.insure/ "Cowbell") [5](https://cowbell.insure/wp-content/uploads/pdfs/CB-US-PrimeTech-Overview-1.pdf "Prime Tech Product Overview") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus")

[Cowbell profile](https://spot.insure/insurance-providers/cowbell)

## What Is Management Liability Insurance?

Management liability packages can combine D&O and employment-practices coverage for leader and workplace claims, while benefit-plan protection may be a separate part. Shared limits can let a claim in one part reduce what is available for another, so compare the limits across the quote. [8](https://content.naic.org/glossary-insurance-terms "Glossary of Insurance Terms") [9](https://www.thehartford.com/management-liability-insurance "Management Liability Insurance") [10](https://www.chubb.com/us-en/business-insurance/forefront.html "The ForeFront Portfolio") [11](https://asset.trvstatic.com/download/assets/pdo-3001.pdf/d66bd58e63c911ee99d14294a32ecb95 "Private Company Directors and Officers Liability Coverage") [12](https://asset.trvstatic.com/download/assets/lia-3001.pdf/e79a6b6c63ca11eeaa7806e978c86228 "Liability Coverage Terms and Conditions") [13](https://asset.trvstatic.com/download/assets/pdo-1100w-ind.pdf/d44fa35c63c911eea5a70eda10c0a4d0 "Private Company Directors and Officers Liability Coverage Application")

## Key Differences in Management Liability Insurance

### Program Scope and Structure

Aon says it designs management-liability programs for professional partnerships, with law, accounting and consulting firms named as its audience. Cowbell’s role is distribution: it gives Zurich-appointed excess-and-surplus wholesalers API access to Zurich Select Plus, sized for small and midsize private companies. Cowbell describes four modules—private management and company liability, employment practices, fiduciary and crime—that buyers can combine. That modular menu is more explicit than Aon’s public overview; confirm which channel can serve your business. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus")

### Access, Terms and Fit

Cowbell targets private companies under 250 employees and under $50 million in assets and lists sectors such as technology, construction, manufacturing and hospitality. Aon’s page centers on professional-service firms. Cowbell says the product is on Zurich admitted paper and backed by Zurich claims service, but the specific issuing subsidiary is not named; Aon’s placement carrier is also not specified. Compare the quote’s insurer, modules and limits rather than the platform description. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus")

## What to Confirm in Management Liability Insurance Quotes

- Ask the wholesaler which Zurich entity issues your Select Plus policy and request module limits and retentions. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus")
- Ask Aon which carrier and form would cover your partnership, including any separate crime or fiduciary limits. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus")

## Offering Details

| Criteria | Aon Management Liability brokerage and risk-advisory offering | Cowbell / Zurich Select Plus Management Liability |
| --- | --- | --- |
| Role in This Line | Aon presents Management Liability 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. [3](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..) | Cowbell is the distribution platform, not the insurer: it gives Zurich-appointed E&S wholesalers API access to Zurich's Select Plus management liability product, a modular suite Zurich already sells to larger companies, sized down for small and midsize private businesses. Zurich's own page confirms Select Plus is 'Zurich Insurance, in collaboration with Cowbell,' offered as a 'proprietary form,' with identical FAQ wording to Cowbell's page. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus") (Evidence: Company-reported; scope: Cowbell intro paragraph and FAQ; Zurich intro and 'Delivering speed from quoting to policy issuance' section..) |
| Issuing Insurer | 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. [3](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..) | Both Cowbell and Zurich say the product is offered on Zurich admitted paper and backed by 'the reputable Zurich Claims service.' Neither page names the specific underwriting Zurich subsidiary or policy-issuing entity; Zurich's site footer copyright reads 'Zurich American Insurance Company,' but that is a general site-wide notice, not a stated policy-issuer confirmation for Select Plus specifically. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus") (Evidence: Company-reported; scope: Management liability page intro; Zurich page intro and footer..) |
| Who It’s For | 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. [3](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..) | Cowbell says the product targets SME private companies with under 250 employees and under $50M in assets, and lists target industries including specialty chemicals, technology, energy/utilities, construction, manufacturing, hospitality, retail, and integrated freight & logistics. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") (Evidence: Company-reported; scope: FAQ 'What size accounts are targeted?' and 'Target industries' list..) |
| Coverage Features | Aon says it designs management-liability programs for professional partnerships to help protect partners and managers exposed to business-operation liabilities. It describes a practice program, not a named insurer’s policy form or a guaranteed coverage result. [3](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..) | Zurich's own page names the four Select Plus modules as 'Private Management and Company Liability,' 'Employment Practices and Third-Party Discrimination Liability,' 'Fiduciary Liability,' and 'Crime Insurance' -- broader labels than the plain 'D&O' and 'EPL' shorthand Cowbell's FAQ uses -- and says a buyer can combine up to four of these modules into one policy. [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus") (Evidence: Company-reported; scope: Zurich page 'Protect your small to midsize business with Zurich's Select Plus Management Liability solutions' section..)<br><br>Cowbell describes management liability as a modular umbrella covering four lines within the Select Plus product: private company D&O, employment practices liability, fiduciary liability, and crime, each addressing a different category of management or employee risk. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") (Evidence: Company-reported; scope: FAQ 'What is the difference between management liability and D&O?'..) |
| Limits and Retentions | 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. [3](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..) | Neither the Cowbell page nor Zurich's own Select Plus page publishes limit or retention amounts for the modules; both were read in full and neither discloses a figure. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus") (Evidence: Not publicly disclosed; scope: Cowbell page and Zurich page, both read on 2026-09-23..) |
| Risk Services | 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. [3](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..) | Cowbell says the product is backed by Zurich's claims service, and frames the offering's advantage as faster quoting and issuance through Cowbell's technology platform compared with Zurich's standard process, rather than describing separate risk-control services. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") (Evidence: Company-reported; scope: Page intro and FAQ 'What makes the Zurich Select Plus offering through Cowbell unique?'..) |
| How to Apply | Confirm in your quote. | Access is limited to appointed wholesalers of Zurich Excess & Surplus (E&S): a wholesaler already appointed by Zurich E&S can reach the product through the Cowbell platform via API, and is directed to contact a Cowbell or Zurich representative to set that up. The product is not sold directly to businesses. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") (Evidence: Company-reported; scope: FAQ 'How can I access the Zurich Select Plus management liability product through Cowbell?'..) |
| Claims Support | Confirm in your quote. | Cowbell says the most common management liability claims fall under employment practices liability, citing discrimination, wrongful termination, harassment, and retaliation as the most frequent claim types. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") (Evidence: Company-reported; scope: FAQ 'What is the most common management liability claim?'; describes claim frequency, not Cowbell's own claims-handling process..) |

## Full Comparison

- [Aon vs Cowbell](https://spot.insure/compare/aon-vs-cowbell): all coverage lines, business roles, service and claims.
- [What Is Management Liability Insurance?](https://spot.insure/coverage/management-liability): Management liability packages can combine D&O, employment-practices and fiduciary coverage, but each part can insure different people, claims and limits.
- [Aon vs Cowbell Crime Insurance](https://spot.insure/compare/aon-vs-cowbell/crime)
- [Aon vs Cowbell Cyber Insurance](https://spot.insure/compare/aon-vs-cowbell/cyber)
- [Aon vs Cowbell D&O Insurance](https://spot.insure/compare/aon-vs-cowbell/directors-officers)
- [Aon vs Cowbell Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/employment-practices)
- [Aon vs Cowbell Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/fiduciary)
- [AIG vs Aon Management Liability Insurance](https://spot.insure/compare/aig-vs-aon/management-liability)
- [AIG vs Cowbell Management Liability Insurance](https://spot.insure/compare/aig-vs-cowbell/management-liability)
- [Alliance Risk vs Aon Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/management-liability)
- [Alliance Risk vs Cowbell Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-cowbell/management-liability)
- [Aon vs The Baldwin Group Management Liability Insurance](https://spot.insure/compare/aon-vs-baldwin/management-liability)
- [Aon vs Beazley Management Liability Insurance](https://spot.insure/compare/aon-vs-beazley/management-liability)

## Sources

### Aon

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. [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.
3. [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.

### Cowbell

4. [Cowbell](https://cowbell.insure/). Cowbell; What We Do; Assess, Insure, Respond and Improve; U.S. navigation; footer legal disclosure. Accessed 2026-09-15.
5. [Prime Tech Product Overview](https://cowbell.insure/wp-content/uploads/pdfs/CB-US-PrimeTech-Overview-1.pdf). Cowbell; PDF pp. 1–4: non-admitted combined Technology E&O and cyber for technology businesses up to $1 billion; up to $5 million; surplus lines in 50 states; edition PRIME TECH US0001 1025. Accessed 2026-09-16.
6. [Small and Midsize Business Management Liability | Zurich Select Plus](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability). Zurich North America; Intro: 'Zurich Insurance, in collaboration with Cowbell, offers the "Zurich Select Plus" proprietary form'; 'Delivering speed from quoting to policy issuance' section; module names (Private Management and Company Liability, Employment Practices and Third-Party Discrimination Liability, Fiduciary Liability, Crime Insurance); Targeted industries list; FAQ (identical to the Cowbell page's FAQ); footer copyright. Accessed 2026-09-23.
7. [Management liability coverage for small & medium enterprises](https://cowbell.insure/mgmt-liability/). Cowbell; Intro paragraph on the Zurich collaboration; FAQ: access, account size, what makes the offering unique, difference between management liability and D&O, why a company needs it, most common claim type; Target industries list. Accessed 2026-09-23.

### Management Liability Insurance Guide

8. [Glossary of Insurance Terms](https://content.naic.org/glossary-insurance-terms). National Association of Insurance Commissioners; Directors & Officers Liability; Employment Practices Liability Coverage; introductory scope note. Accessed 2026-09-16.
9. [Management Liability Insurance](https://www.thehartford.com/management-liability-insurance). The Hartford; What Is Management Liability Insurance?; Who Does Management Liability Insurance Protect. Accessed 2026-09-16.
10. [The ForeFront Portfolio](https://www.chubb.com/us-en/business-insurance/forefront.html). Chubb; Introduction; optional coverage parts; private, not-for-profit and healthcare portfolios. Accessed 2026-09-16.
11. [Private Company Directors and Officers Liability Coverage](https://asset.trvstatic.com/download/assets/pdo-3001.pdf/d66bd58e63c911ee99d14294a32ecb95). Travelers Casualty and Surety Company of America; I p.1; III pp.2–3; IV pp.4–6; VI pp.6–8. Accessed 2026-09-16.
12. [Liability Coverage Terms and Conditions](https://asset.trvstatic.com/download/assets/lia-3001.pdf/e79a6b6c63ca11eeaa7806e978c86228). Travelers Casualty and Surety Company of America; III.B p.3; III.C pp.4–5; III.D–G pp.5–6. Accessed 2026-09-16.
13. [Private Company Directors and Officers Liability Coverage Application](https://asset.trvstatic.com/download/assets/pdo-1100w-ind.pdf/d44fa35c63c911eea5a70eda10c0a4d0). Travelers Casualty and Surety Company of America; I–II pp.1–2; III–IV pp.2–3; V–VIII pp.3–4. 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.

## 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).

## Cowbell Reviews

Review Score: 2.0 / 10 from 1 rated source, equally weighted.

Cowbell has one public rating we could find: 1.0 out of 5 on SourceForge from three reviews in 2023. That's too few and too old to say much.

- SourceForge: SourceForge rating 1.0 (out of 5); 3 reviews. SourceForge software directory listing for Cowbell Cyber. Three small-business reviewers describe the cyber insurance product. Small sample, all from 2023. Period: reviews dated Jan to Jul 2023. Checked 2026-09-29. [Cowbell Cyber Reviews](https://sourceforge.net/software/product/Cowbell-Cyber/)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/cowbell/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/aon-vs-cowbell/management-liability.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)