Scrum of Scrums (SoS) is a lightweight scaling approach
Unlike some of the other scaling approaches, in the Scrum of Scrums you don't need dedicated resources for coordination.
Mike Cohn sites following experiences using Scrum of Scrums:
- In this way, we have worked on projects with more than 500 people and have consulted on projects with more than 1,000.
- each team identifies one person who attends the Scrum of Scrums meeting to coordinate the work of multiple Scrum teams
- In many organizations, having a Scrum of Scrums meeting two or three times a week is sufficient.
I have used Scrum of Scrums to coordinate across 4 teams. In our case, we met twice a week and had more than one person (Architect, Product Owner, Scrum Master) represent each team. Some of these people handled multiple projects.
Our SoS meeting agenda typically consisted of two main items:
- Cross-team dependencies: Where one team is building, say a component, which will be used by another team.
- Resource contention: We had some shared resources. We negotiated the priorities and what % of time of the shared resource will be available for each team.