This book constitutes revised selected papers from the 12th International Conference on Web
Information Systems and Technologies WEBIST 2016 held in Rome Italy April 23-25 2016
organized by the Institute for Systems and Technologies of Information Control and
Communication (INSTICC). The purpose of the WEBIST series of conferences is to bring together
researches engineers and practitioners interested in technological advances and business
applications of web-based information systems. The 9 full papers presented in this volume were
carefully reviewed and selected originally 123 paper submissions. They contribute to the
understanding of relevant trends of current research on Web Information Systems and
Technologies comprising recommender systems sentiment analysis ranking and Web applications
and Web architecture.