This book offers a coherent and realistic image of architectures, techniques, protocols, and cloud-based solutions related to Ambient Assisted Living (AAL) and Enhanced Living Environment (ELE). It presents state-of-the-art technological solutions and supporting systems such as resource and data management, fault tolerance, security, monitoring and control. The book editors are part of The Enhanced Living Environments (ELE) project, which promotes the provision of infrastructures and services for autonomous living via the seamless integration of ICT within homes and residences.