This book constitutes the refereed proceedings of the 16th International Conference on Innovations for Community Services, I4CS 2016, held in Vienna, Austria, in June 2016.

The 12 revised full papers presented together with two short papers were carefully reviewed and selected from 30 submissions. The papers are organized in topical sections on navigation and data management; monitoring and decision making; coding and security; collaboration and workflow; routing and technology; topic and object tracking.

This book constitutes the refereed proceedings of the 17th International Conference on Innovations for Community Services, I4CS 2017, held in Darmstadt, Germany, in June 2017.

The 12 revised full papers presented together with two short papers were carefully reviewed and selected from 31 submissions. The papers are organized in topical sections on Social Networks; Cooperative Networks; Optimization Algorithms; Infrastructure Planning; Energy Management; Short Papers.