Since 1994, IWQoS has served as the prime annual workshop on Quality of Service, providing an international forum for the presentation and discussion of cutting edge research in the field. Building on the success of previous workshops, the objective of the workshop is to bring together researchers, developers, and practitioners working in this area to discuss recent and innovative results, and to identify future directions and challenges in developing practical computer / communication systems where predictable, controlled, and robust performance is a central requirement. IWQoS has a long standing tradition of being highly interactive, while maintaining highest standards of competitiveness and excellence. The scope of the workshop covers the main and currently important aspects of QoS research, including related issues such as availability, reliability, security, pricing, resource management, and performance guarantees.