The Application Services Library (ASL) is a public domain approach for management, maintenance and enhancement/renovation of (business) applications. It consists of a framework of processes, supplemented by various publications and a periodically updated library of best practices that are available on the website of the ASL Foundation, which also provides a platform for application management organizations. Organizations use ASL as a management tool to improve the performance of application management services. you can get the key frameworks for IT Management in this title: http://www.vanharen.net/product_info.php?products_id=214