When a team adopts Scrum for the first time, the fastest question that arises is not "how to structure a sprint" but "who does what?". The three Scrum accountabilities : Scrum Master, Product Owner, and Developers : sound simple on paper. In reality, each covers a distinct scope, specific responsibilities, and clear boundaries that many teams cross without realizing it. Result: a Scrum Master turning into a traditional project manager, an unavailable Product Owner, or a dev team waiting for detailed specifications instead of collaborating. This article explains what the 2020 Scrum Guide actually says about each role, how they interact across events, and the 5 most common pitfalls to avoid.
The 3 Scrum Accountabilities: Overview
The 2020 Scrum Guide defines three accountabilities within the Scrum Team:
- Scrum Master: accountable for establishing Scrum, continuous improvement, and serving the team and organization.
- Product Owner: accountable for maximizing product value, managing the Product Backlog, and interfacing with stakeholders.
- Developers: professionals committed to creating usable Increments each sprint.
Scrum Master: Facilitator, Not Project Manager
The Scrum Master role is the most misunderstood in traditional organizations. A Scrum Master is not a renamed project manager. They do not assign tasks, manage individuals, or take sole accountability for delivery dates. Their mission is to create conditions in which the team can succeed.
Product Owner: Value Guardian
The Product Owner is accountable for maximizing value created by the Scrum Team. They own the Product Backlog, order items by business value, and clarify user stories throughout the sprint.
Developers: Self-Organizing Professionals
Developers estimate work, build the Sprint Backlog during sprint planning, self-organize to meet the Sprint Goal, and ensure every delivered item adheres to the Definition of Done.