Scrum of Scrums: A Detailed Guide with Practical Examples
The Scrum of Scrums (SoS) is an advanced scaling mechanism designed to handle multiple Scrum teams working on a large project. It focuses on maintaining alignment and coordination between teams, ensuring they are all working towards common objectives without losing the benefits of Scrum’s lightweight, iterative structure. This detailed guide will walk you through all aspects of the Scrum of Scrums framework, including its concepts, practical use cases, comparisons, and more.
What is Scrum of Scrums?
At its core, Scrum of Scrums is a technique used to scale Scrum by enabling multiple teams to work together on a complex project. It’s typically applied when a project is too large for a single Scrum team (which ideally consists of 5-9 members). In such cases, the Scrum of Scrums framework helps maintain efficiency, collaboration, and synchronization across all teams involved.
Key Concepts of Scrum of Scrums
Cross-Team Communication
SoS facilitates communication between multiple Scrum teams. Instead of each team holding their individual Scrum meetings in isolation, SoS brings together representatives from each team to coordinate their efforts, ensuring transparency and alignment.Scrum of Scrums Meeting
The Scrum of Scrums meeting is a daily or regular sync-up, similar to a daily stand-up, but at a multi-team level. One member (often the Scrum Master or a delegate) from each Scrum team attends the SoS meeting, where they discuss team progress, impediments, and dependencies that might affect other teams.Representatives
Unlike in a regular Scrum meeting, where all team members participate, only one representative from each team joins the SoS meeting. This person reports the team’s progress, any obstacles encountered, and any dependencies that need attention.Scaled Scrum Framework
SoS is part of the broader Scaled Scrum frameworks like LeSS (Large Scale Scrum) and Nexus. These frameworks provide a more structured and formalized method for applying SoS to large projects.
How Scrum of Scrums Works: The Step-by-Step Process
Form Multiple Scrum Teams
In a large project, Scrum teams are formed to focus on different features or components of the project. Each team operates independently following the Scrum process, including holding daily stand-ups, sprints, sprint reviews, and retrospectives.Designate Representatives for Scrum of Scrums
Every team appoints a representative who will attend the Scrum of Scrums meeting. This is typically someone with good communication skills, who understands their team’s blockers, progress, and dependencies with other teams.Hold Scrum of Scrums Meetings
The SoS meeting occurs at a regular interval (usually daily or bi-weekly) and follows a structure similar to the daily Scrum:- What has your team done since the last SoS?
- What will your team do before the next SoS?
- What obstacles or impediments is your team facing that could impact others?
- What dependencies do you have on other teams?
Address Dependencies and Blockers
The primary focus of SoS is to identify and resolve dependencies or blockers that could slow down or disrupt progress for the entire project. Solutions are discussed in the meeting or escalated to higher-level management if necessary.Maintain Synchronization
The representatives bring back any feedback from the Scrum of Scrums to their respective teams, ensuring continuous synchronization between teams.
Practical Example of Scrum of Scrums
Let’s say a large software company is developing a new product consisting of multiple modules. The project is too large for a single Scrum team, so they form four teams:
- Team A: Frontend development
- Team B: Backend development
- Team C: Database architecture
- Team D: API integration
Each team works independently within their sprints, but their outputs are interconnected. Team A, for example, cannot complete its frontend work without input from Team D (API integration). Team C’s database design might impact the work of both Team B and Team D.
To ensure they stay aligned, they implement a Scrum of Scrums:
- The Scrum Masters from each team attend a daily Scrum of Scrums meeting.
- They discuss inter-team dependencies, such as backend features required by the frontend team.
- Issues that might block one team but affect the others (e.g., delays in API development) are flagged and addressed.
This coordination ensures that work progresses smoothly across teams, and no single team becomes a bottleneck.
Comparison with Other Scaling Frameworks
| Framework | Focus | Team Size | Complexity | Main Features |
|---|---|---|---|---|
| Scrum of Scrums (SoS) | Multi-team coordination | 5-9 members per team, multiple teams | Medium | Daily sync-up between team representatives, informal structure |
| LeSS (Large Scale Scrum) | Scaling Scrum for larger projects | Up to 8 teams | High | Single Product Backlog, one Product Owner, more formal structure |
| Nexus | Structured scaling for complex projects | 3-9 teams | High | Nexus Integration Team, Nexus Sprint Backlog |
| SAFe (Scaled Agile Framework) | Enterprise-level scaling | Multiple teams, entire organization | Very high | Release train, multiple levels of roles, and artifacts |
Scrum of Scrums is a relatively informal way to scale Scrum, making it well-suited for organizations that prefer flexibility. More formal frameworks like LeSS or Nexus introduce additional structure but require more upfront planning.
When to Use Scrum of Scrums?
Scrum of Scrums is ideal for:
- Mid-sized projects: It’s perfect for projects that have outgrown a single team but don’t require the full structure of frameworks like LeSS or SAFe.
- Organizations with a Scrum foundation: If your teams already practice Scrum effectively and need a method to scale it across several teams, SoS is a great next step.
- Projects with interdependent teams: If multiple teams are working on different parts of the same product, SoS helps manage dependencies without bogging down individual team sprints.
Challenges of Scrum of Scrums
- Coordination Overhead: With multiple teams working together, it can be difficult to manage dependencies and maintain clear communication.
- Role Confusion: In some cases, the role of the Scrum of Scrums representative can become blurred, especially if they lack decision-making power.
- Meeting Fatigue: If the Scrum of Scrums meeting becomes too frequent or too detailed, it can create meeting fatigue, lowering its effectiveness.
Best Practices for Implementing Scrum of Scrums
Keep Meetings Short and Focused
SoS meetings should be time-boxed, much like a daily Scrum. Only discuss items that affect multiple teams or require inter-team coordination.Rotate Representatives
It’s helpful to rotate the representative role periodically to ensure everyone on the team stays informed and engaged.Prioritize Transparency
Encourage open communication between teams. Each team should be transparent about its progress and any potential blockers.Use Tools for Tracking Dependencies
Implementing Agile tools like Jira or Trello to track inter-team dependencies can enhance visibility and help prevent bottlenecks.
The Scrum of Scrums framework is a powerful method for scaling Agile across multiple teams. It facilitates better communication, coordination, and alignment, ensuring that all teams involved are working towards common goals. By implementing SoS in your organization, you can maintain the core values of Scrum while scaling its benefits to larger, more complex projects.
Key Takeaways:
- SoS is essential for managing interdependencies and maintaining alignment across multiple Scrum teams.
- It’s most effective for mid-sized projects where formal scaling frameworks are unnecessary.
- Use practical tools and regular communication to streamline the SoS process and avoid common pitfalls.
With the right implementation, Scrum of Scrums can greatly enhance the effectiveness of your Agile practice, allowing your organization to tackle larger projects without sacrificing agility.
