1. A computer program product, comprising a non-transitory computer usable medium having a computer readable program code embodied therein, the computer readable program code adapted to be executed to implement a method, the method comprising: storing for each of a plurality of entities policy data corresponding thereto for governing interaction with at least one of the entities utilizing an interoperability network, wherein at least one of policy data of a first one of the entities and policy data of a second one of the entities is used for authorization; and merging the policy data of the first entity and the policy data of the second entity to produce a combined policy that is honored by both of the first entity and the second entity.