A method includes: (a) setting up a service orchestration rule set between a home operator and a sponsor service provider, managing a service domain for obtaining a data structure for a service definition object; (b) receiving a list of available services from the sponsor service provider; (c) receiving a subscriber selection of at least one service from the list; (d) adding a first set of data including subscriber specific data to the service definition object; (e) sending a service creation request to the sponsor service provider for subscribing to the selected service; and (f) receiving a response from the sponsor service provider including the service definition object complemented with a second set of data to allow the selected service to be executed.