This book constitutes revised selected papers from the 3^rd International Conference on Lean and Agile Software Development, LASD 2019, and the 7^th Conference on Multimedia, Interaction, Design and Innovation, MIDI 2019, which took place under the umbrella of the 14^th Federated Conferences on Computer Science and Information Systems, FedCSIS, in Leipzig, Germany, in September 2019.   LASD 2019 received a total of 30 submissions, of which 6 full and 1 short paper are included in this volume. For MIDI 2019 one short paper was accepted for publication in this book, from a total of 6 submissions.