TMF) is a global nonprofit consor- tium that develops business and technical frameworks, specifications and guide- lines for designing telecommunication, media and content-based services. The Next Generation OSS (NGOSS) initiative organized through TMF supports the ongoing business process automation work of the CSPs, software vendors and systems integrator, through the provisioning of process maps, data models, and applications maps. Therefore, NGOSS can also be considered as the reference enterprise archi- tecture for the industry and as an intended standard in defining and developing the OSS/BSS components. The initiative has produced: The enhanced Telecom Operations Map (eTOM) defining CSPs processes The Shared Information and Data (SID) framework supporting harmonized information definitions to be used as a common language in NGOSS-based applications The Telecom Application Map (TAM) defining the functionality of telecom supporting applications or services Overview of Telecom Operator Software Market Technology Neutral Architecture (TNA) defining concepts for managing the lifecycle of the OSS/BSS and the requirements for and services of an NGOSS- compliant architecture For the purpose of analysing the OSS/BSS market, the eTOM and the TAM above provide a good starting point in explaining how CSPs conduct their business, and therefore, which software systems they deploy in order to support their operations. The eTOM framework describes a standard structure, terminology and classifica- tion scheme for all the CSP processes at different levels of detail, and according to their priority for the CSP's business. The framework thus provides a basis for restructuring CSP operations and also for general working agreements with soft- ware providers. The eTOM framework is represented as a process model in a series of groupings using hierarchical decomposition (Kelly 2003). The three major process areas described by TMF (2005) are: 1. The Strategy, Infrastructure and Product process area - includes processes needed in or