Scrum suggests the size of the Development Team (the Scrum Team members who perform the work of the Sprint Backlog) be between three (3) and nine (9) people. (The Scrum Master and Product Owner are not included in that count unless they are also executing the work of the Sprint Backlog.) To maximize cohesion and minimize complexity, it is important larger groups be split into smaller units or downsized.
Considerations for re-organizing into multiple Scrum Teams:
- People executing the work may be best suited to decide optimal team size and composition. Adjustments to team composition will be most effective if the team members are trusted (and supported) to re-organize around their own work.
- Groups larger than eleven people often naturally subdivide into smaller, cross-functional sub-groups; therefore it may be possible to carefully observe which team members interact regularly while getting work done and simply acknowledge those informal arrangements.
- In order to minimize dependencies between teams, Scrum Teams whose mandates are to own discreet Products or systems are preferable to groups whose mandates are to support “components” of larger systems.
- Organizations which currently employ Project Management methods ought to consider changing budgeting & staffing practices to align around Product delivery rather than Project Management. Doing so will make value streams transparent and bring clarity to Product-centric team mandates.