Jean-Michel Bruel, Manuel Mazzara, Bertrand Meyer: Software Engineering Aspects of Continuous Development and New Paradigms of Software Production and Deployment - Second International Workshop, DEVOPS 2019, Château de Villebrumier, France, May 6-8, 2019, Revised Selected Papers. Lecture Notes in Computer Science 12055, Springer 2020, ISBN 978-3-030-39305-2