Business organisations are increasingly dependent on the electronic delivery of services, irrespective of type or size of organisation, and require high quality information systems (IS) services which can adapt to business and user requirements as they evolve. This publication contains best practice information for IT practitioners on the development and delivery of quality IS services to maximise business objectives and benefits, building on the foundation of the other publications in the information technology infrastructure library (ITIL) series. Topics covered include: the value of information technology for business development; business management frameworks and IS alignment; understanding the business viewpoint; supplier relationship management; roles, responsibilities and interfaces; quality management; as well as giving a bibliography, list of acronyms, a glossary, and some sample/template documents.