Scrum of Scrums Master (SoSM), Release Train Engineer (RTE), Chief Scrum Master
Scaling Roles, Scaling Structures
Impediment Resolution, Continuous Improvement, Cross-Team Coordination, Dependency Management
The following challenges are likely to be improved or addressed by implementing this pattern:
Scaling the Scrum Master (Team Coach/Facilitator) recreates the team coach/facilitator role and related functions to provide the same benefits to teams of multiple teams, helping the network of teams to deliver a valuable working product frequently together. A scaled Scrum Master (Team Coach/Facilitator) helps to ensure that the team of teams successfully executes through teaching, coaching, mentoring, and facilitation activities.
The pattern is the reuse of the team coach/facilitator role in a larger, scaled context. As a result, an effective Scaled Team Coach/Facilitator
In Scrum@Scale, this person is called the Scrum-of-Scrums Master (SoSM), which is a scaling of the Scrum Master accountability. A further scaling of the person is called the Scrum-of-Scrum-of-Scrums Master. The SoSM is a true leader that serves and could be one of the individual scrum masters in the scrum of scrum.
In Scaled Agile Framework, this person is called the Release Train Engineer (RTE). A further scaling of this role is called the Solution Train Engineer. In the contrast to the Scrum@Scale, the RTE expect to be facilitate all events for the network of teams.
Some organizations also call this individual the Chief Scrum Master.
There are a variety of implementation techniques. One common technique is to select one of the existing Team Coaches/Facilitators from the network of teams and ask them to begin facilitating with all of the teams, starting with the Cross-Team Sync. Then, add further events and activities — such as release planning, scaled reviews and retrospectives — as needed. Another technique is wholesale organizational adoption of a framework that includes a dedicated Scaled Team Coach/Facilitator.
Short term, the Scaled Team Coach/Facilitator is being effective when:
Long term, the Scaled Team Coach/Facilitator is being effective when:
Here are some possible/potential success measures you may want to consider using:
The “Scaling the Scrum Master” pattern is best used when:
Do Not use this pattern when:
Sources:
1. Release Train Engineer - Scaled Agile Framework. (2023, March 14). Scaled Agile Framework. https://scaledagileframework.com/release-train-engineer/
2. The Scrum@Scale Guide, Version 2.1 — February 2022. | Scrum@Scale Framework. (2022, April 1). Scrum@Scale Framework. p. 10. https://www.scrumatscale.com/scrum-at-scale-guide-online/#role-the-scrum-of-scrums-master