Apparatus and methods are provided for managing network resources. A central unified services and device management framework is operated to simultaneously manage various types of resources on behalf of multiple organizations. Within the framework, a common management layer provides services (e.g., account management, event logging) common to multiple different services and devices. Within a specific management layer, separate subsystems are implemented for different devices or types of devices. The device-specific subsystems invoke device-independent functional modules through primitives exposed by the common management layer. A given organization may establish tiered logical constructs to group resources deployed at different physical locations (e.g., cities, offices) or within different subdivisions of the organizations (e.g., subsidiaries, departments).