A large multinational insurer is putting its U.S. annuity products on one administration system.

Aviva P.L.C., London, recently acquired AmerUs Group Company, Des Moines, Iowa, and started merging the AmerUs operations with its own U.S. operations.

The combined company, Aviva USA, now is using the AdminServer Policy Administration System to support the 23 annuity products it now offers, according to AdminServer Inc., Chester, Pa.

AdminServer also will provide an enterprise service bus for Aviva in the United States, AdminServer says.