This book constitutes the thoroughly refereed proceedings of three international workshops held in Rome, Italy, in June 2019, associated with the 31st International Conference on Advanced Information Systems Engineering, CAiSE 2019.These workshops were:COGNISE, The 7th International Workshop on Cognitive Aspects of Information Systems EngineeringKET4DF, First International Workshop on Key Enabling Technologies for Digital FactoriesBIOC&FAISE, Joint Workshop on Blockchains for Inter-Organizational Collaboration and Felxible Advanced Information SystemsThe total of 19 papers presented in this volume were carefully reviewed and selected from 39 submissions.