Since the late 1980s, the CAiSE conferences have provided a forum for the p- sentation and exchange of research results and practical experiences within the ?eld of Information Systems Engineering. CAiSE 2001 was the 13th conference in this series and was held from 4th to 8th June 2001 in the resort of Int- laken located near the three famous Swiss mountains – the Eiger, M ̈ onch, and Jungfrau. The ?rst two days consisted of pre-conference workshops and tutorials. The workshop themes included requirements engineering, evaluation of modeling methods, data integration over the Web, agent-oriented information systems, and the design and management of data warehouses. Continuing the tradition of recent CAiSE conferences, there was also a doctoral consortium. The p- conference tutorials were on the themes of e-business models and XML appli- tion development. The main conference program included three invited speakers, two tuto- als, and a panel discussion in addition to presentations of the papers in these proceedings. We also included a special ‘practice and experience’ session to give presentersanopportunitytoreportonanddiscussexperiencesandinvestigations on the use of methods and technologies in practice. Weextendourthankstothemembersoftheprogramcommitteeandallother referees without whom such conferences would not be possible. The program committee, whose members came from 20 di?erent countries, selected 27 hi- quality research papers and 3 experience reports from a total of 97 submissions. The topics of these papers span the wide-range of topics relevant to information systems engineering – from requirements and design through to implementation and operation of complex and dynamic systems.