Aon

Aon is the kind of firm companies call when they need help with insurance broking, employee benefits, risk, and other big-business housekeeping that is hard to do neatly in-house. By our assessment, it is strongest when the job is complex and paperwork-heavy, because that is where a global broker and adviser can pull together cover, data, and negotiation in one place. The trade-off is that it is not a simple consumer brand; its value lives in contracts, service teams, and specialist knowledge, so the work can feel distant and slow to outsiders. In practice, Aon is less about a single product than about account management, advice, and large-client relationships. It sits near Marsh and WTW in the large insurance-and-consulting lane, and the fit is best for organisations that need help managing risk rather than a quick retail purchase.