IT organizations deliver a wide variety of services to the business. These services include infrastructure support, application development, and application support. Increasingly, IT organizations are seeking to improve the quality of the services that they provide to the business.
The rendering of service is a different activity than the making of products. Many approaches (CMMI, RAD Methodology, AGILE) focus on the development of software. However, ITIL is the only definitive approach that focuses exclusively on Service Management.