M and ITIL. A sample business flow and how it can be aligned with telecom standard model is also taken up in this chapter. The chap- ter is intended to provide the reader with an overview of how different models can be applied together for effective business process management. 22.1 Introduction There are multiple telecom and enterprise specific business process models that are used in a telecom company for effective business management. Some of the most popular ones include eTOM (enhanced Telecom Operations Map) for telecom pro- cess; ITIL (Information Technology Infrastructure Library) for IT process, and quality certifications like ISO/IEC20000 and CMMI. The usage of eTOM and ITIL used to be in two different domains, where telecom companies continued using eTOM and IT companies used ITIL. The change in telecom space brought out by convergence and flat world concepts has resulted in compelling IT enabled services. Most telecom service providers then started outsourcing IT business activ- ities in the telecom space to external IT service providers. Many IT companies play a significant role in current telecom industry. This is because the IT infrastructure is the heart of every business. The increasing participation of IT companies in telecom industry has brought confusion on what process models need to be used to manage the telecom busi- ness. IT Infrastructure Library (ITIL) developed by the Central Computer and Telecommunications Agency has been adopted by many companies to manage their Fundamentals of EMS, NMS and OSS/BSS IT business. eTOM the popular process framework of telecom service providers is the most widely applied and deployed for end-to-end service delivery and support framework for ICT (Information and Communication Technology) service provid- ers in the telecom industry. So identifying the purpose of ITIL and where eTOM can be complemented with ITIL is an area of concern in service provider space. Another concern for service providers is the migration strategy for moving from legacy to next gener