Application management refers to the maintenance and enhancement of information systems, and accounts for a large proportion of IT expenditure. This publication contains information on the ASL (the Application Services Library) framework, which is currently the only public domain application management standard in the world. Aspects discussed include: the structure of the ASL framework, maintenance processes including configuration, capacity and continuity management; impact analysis, design, testing and implementation; connecting processes such as software control and distribution; application cycle management; organisations cycle management; relationships with other forms of management; application and introduction of ASL.