Network service performance monitoring apparatus and methods are disclosed. Performance information associated with a network service is collected from multiple service monitoring points. The service monitoring points include at least a service monitoring point in a first communication network and a service monitoring second communication network that is controlled independently of the first communication network. The first communication network could be a network in which a service provider system that provides the network service is located, and the second communication network could be a communication network through which the network service is accessible by a network service consumer. In this case, the collected performance information may be integrated to create an inter-network view of performance of the service. Historical performance information associated with a network service may be used to establish a performance baseline for the service.