I had the privilege of attending Scrum.org‘s 2-day seminar on Scaled Professional Scrum. The Nexus, a connection or series of connections linking two or more things (direct translation from Latin a binding together), is the recommended scaling framework. The purpose of the Nexus is to manage dependencies between 3-9 Scrum Teams towards “reification”, to make an abstract idea real or concrete. This is ensured mostly through a single Product Owner, single Product Backlog, integrated (Nexus) Sprint Planning, Review and Retrospective and the addition of a Nexus Integration Team whose membership is made up mostly of Scrum team members internal to the Nexus, but often also includes other support personnel. The structure is very similar to LeSS, but perhaps even less prescriptive and is certainly much less prescriptive than SAFe. This is probably my favourite thing about the Nexus – the fact that it has just enough structure to be a model for scaling Scrum, but is light and flexible enough to accommodate all of the nuances that “just depend” on your situation. Like the other two above-mentioned scaling models, it places emphasis on the need for strong technical practices, continuous integration and the synchronization of events to facilitate integration. There is flexibility around synchronization, in that if the Nexus Sprint is 4 weeks in duration and teams within the Nexus want to do 2 or even 1 week Sprints, the model accommodates – as long as all of the teams’ work is combined into a fully integrated (reified) increment of potentially shippable product by the end of the Nexus Sprint.