In May 2007, the Office of Government Commerce (OGC) released a new version of ITIL. Aspects of Application Management are to be found in all five volumes of the core guidance. In this paper, the interfaces with another IT framework, the Application Services Library, are more described. There are both similarities and differences between ITIL and ASL. Both frameworks recognize added value in the other and the ASL BiSL Foundation and TSO, the publisher of ITIL, have produced this white paper in order to provide guidance and understanding about the synergy and distinctness of each framework. This publication explains how both ITIL V3 and ASL define and address the Applications domain and provide the reader with an insight into how the frameworks can best be applied. Living Apart Together could qualify the relationship between ITIL V3 and ASL. They both have many common interests and frequently (have to) interact but its also nice to have a home of your own.