Investor Presentaiton

Aon Business Services - Ongoing Evolution of How We Operate Operating principles and track record of progress... Efficiency and Operating Leverage Service Delivery Excellence +1,120 bps Innovation → 30.8% • . ...are the foundation for our next stage of value creation Standardized Platforms Investing in standardizing, digitizing and connecting platforms and technology across our ABS ecosystem Enhances analytics and insight, creating better solutions for our colleagues and our clients in the core and new areas of demand Standardized Operations Investing in standardization of common processes across our firm, enabling us to optimize client outcomes and scale best practices Enables ongoing efficiency and enhancements, including through the use of tools like automation, machine learning, and Al Annual Adjusted Operating Margin¹ 19.6% 1 AON 2010 2022 New Products at Scale . Standardized platforms and operations combined with expertise and analytics enable the development of scalable, data-driven solutions across the firm Enables rapid scale of content and capability, including from organic investments and acquisitions The results presented on this page are non-GAAP measures that are reconciled to their corresponding U.S. GAAP measures in the Appendices of this presentation. 00 8

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