This book constitutes the proceedings of the 17th IFIP International Conference on Distributed Applications and Interoperable Systems, DAIS 2017, held in Neuchâtel, Switzerland, in June 2017. The 11 papers presented together with 4 short papers in this volume were carefully reviewed and selected from 23 submissions. The papers are organized in topical sections on running system efficiently, storing data smartly, roaming in graph, building collaborative services, and making things safe.