The field of intelligent user interfaces has received great attention from the research community in the last few years with the explosion of new applications and services designed to be executed in a dynamic and continuously changing environment and aligned to the demands and preferences of the users. Intelligent User Interfaces: Adaptation and Personalization Systems and Technologies innovatively combines broad research areas in intelligent user interfaces to provide an authoritative, comprehensive review of recent studies, state-of-the-art applications, and new methodologies and theories that support the issue of adaptation and personalization in various application levels."