This book covers key topics in the field of intelligent ambient adaptivesystems. It focuses on the results worked out within the framework of theATRACO (Adaptive and TRusted Ambient eCOlogies) project. The theoreticalbackground, the developed prototypes, and the evaluated results form a fertileground useful for the broad intelligent environments scientific community aswell as for industrial interest groups. The new edition provides:Chapter authors comment on their work on ATRACO with final remarks as viewed in retrospectiveEach chapter has been updated with follow-up work emerging from ATRACOAn extensive introduction to state-of-the-art statistical dialog management for intelligent environments Approaches are introduced on how Trust is reflected during the dialog with the system