Marsh McLennan is a global professional services firm providing risk management, reinsurance, people and investments consulting, and management consulting across 130 countries.
Marsh McLennan is a global professional services firm operating in 130 countries, generating annual revenues exceeding $24 billion. The company employs over 90,000 colleagues and delivers expertise across four principal businesses: Marsh (risk), Guy Carpenter (reinsurance and capital), Mercer (people and investments), and Oliver Wyman (management consulting). Its services help organizations manage complex risk, workforce, and strategic challenges.
The firm's scale and breadth of expertise position it as one of the world's largest advisors to corporations, governments, and institutions. Its four businesses are each market leaders in their respective domains, providing specialized knowledge that underpins organizational decision-making in areas from insurance placement to talent strategy.
For data center professionals, Marsh McLennan's relevance lies in the intersection of risk management, insurance, and operational consulting. The firm advises clients on mitigating risks associated with critical infrastructure, including physical and cyber exposures, and provides consulting services on workforce strategy and capital allocation that directly impact data center operations and investment decisions.
