ions framework to ensure that process implementations are based on eTOM. The successful development of the telecom process documentation gives the ability to accurately decide on a new IT service provider to support the entire range of business processes. Customers are outsourcing the delivery and support of their IT services to telecom companies where the telecom company offers IT service management as a sellable service. eTOM helps to eliminate process gaps through visualization of interfaces for interaction. Most service providers using eTOM were able to reduce IT costs, improve the product quality, and reduce time to market the product. Use of eTOM as a founda- tion for process identification and classification ensures that the process repository will be able to evolve with industry best practices. Though eTOM has a functional area on enterprise process, this part is not defined to the level of granularity offered for telecom processes. So though eTOM can be considered a complete process framework, there are enterprise processes that will require more levels of definition. TeleManagement Forum definitions have eTOM level 0, level 1, level 2, and level 3 process maps. 22.3 ITIL The ITIL is a public framework describing best practices for IT service manage- ment. ITIL facilitates continuous measurement and improvement of the business process thereby improving the quality of IT service. ITIL was introduced due to a number of compelling factors in IT industry: Increase in cost of maintenance of IT services. Increase in complexity due to changes in IT infrastructure technology. The frequent change management required in IT services. Fundamentals of EMS, NMS and OSS/BSS Emphasis from customer on quality of IT services. Flexibility to align the IT services based on business and customer needs. Need to reduce the overall cost of service provisioning and delivery. The ITIL processes represent flows in a number of key operational areas. The main emphasis is on the stages in service life cycle, namely: Service strategy: