Systems and methods are disclosed for providing service management across different technology networks. A centralized telecom serving system (TSS) includes a plurality of interface gateways, a central adapter, and a common interface. When in operation, a first interface gateway receives a first service request from a first network, and converts the first service request from a signaling interface used in the first network to the common interface. The central adapter receives the first service request over the common interface, and processes service management logic to identify multiple services that trigger on the first service request and determine a sequence for providing the multiple services. For each service, the central adapter generates a second service request in the common interface, and transmits the second service request to a second interface gateway that is coupled to a second network.