Currently enjoying reading "The Nexus Framework for Scaling Scrum" I recommend this book. Written by Dave West (CEO of Scrum.org) with two others...with foreword by Ken Schwaber (co-founder of Scrum). Met Dave West in person in Jan 2019, we chatted after his speech, then signed my copy of his book, "The Nexus Framework for Scaling Scrum" It is promising... I love the simplicity; a SAFe alternative... or potentially a SAFe killer. Watch item.