Alexander Roth will lead the unit, which pulls structured reinsurance, analytics and capital markets specialists together to serve clients in Europe, Asia and other markets.
The former SCOR chief keeps global charge of Capital and Advisory while taking on Latin America and the Caribbean alongside the Asia-Pacific businesses.
The Singapore appointment moves the energy specialist out of the broker's Calgary office after seven years serving upstream and downstream clients in Canada.
Clients buying cyber cover brokered by Marsh will receive round-the-clock scanning of external infrastructure at no extra charge across Asia, excluding China.