Service-oriented model of IT division of large organization

This paper describes model of IT division that provides permanent development and support of enterprise information system (IS). Model of IS which is described it as a network of interacting infrastructure services, services of business application support, and services of business processes support is given. Common process of coordinated development of all services is discussed, as well as processes of incremental development and radical transformation of IS. It is established that generally the IT organization of the service focused on providing services, can include the following structural units: groups of development of the services, realizing processes of changes; group of development of a corporate information platform (or some such groups if it isn't possible to be limited to use of only one platform); committee on strategic development of IS and IT in the organization.