Both are Scrum accountabilities, but they focus on different things.
| Product Owner | Scrum Master |
|---|---|
| Focuses on what should be built | Focuses on how the team works effectively |
| Maximizes product value | Improves Scrum effectiveness |
| Manages and orders the Product Backlog | Coaches the team in Scrum and Agile practices |
| Clarifies user stories and acceptance criteria | Facilitates events and removes impediments |
| Makes priority and scope decisions | Protects the team from process problems and disruption |
| Represents customer and business needs | Supports the team, Product Owner, and organization |
| Accepts completed stories based on agreed criteria | Does not normally accept or prioritize stories |
Product Owner responsibilities
The Product Owner:
- defines and communicates the Product Goal;
- creates or clarifies Product Backlog items;
- orders the backlog by value, risk, and dependency;
- explains user stories and acceptance criteria;
- decides what is most important;
- works with customers and stakeholders;
- reviews whether completed work meets expectations.
The Product Owner does not assign individual tasks to developers or tell them how to implement the solution.
Scrum Master responsibilities
The Scrum Master:
- helps everyone understand and apply Scrum;
- facilitates Scrum events when needed;
- helps remove blockers;
- coaches the team toward self-management;
- helps the Product Owner manage the backlog effectively;
- protects transparency and continuous improvement;
- helps resolve collaboration and process problems.
The Scrum Master is not the team’s traditional manager and does not normally assign work.
During Sprint Planning
| Product Owner | Scrum Master |
|---|---|
| Explains priorities and desired outcomes | Ensures the planning process is effective |
| Clarifies stories and acceptance criteria | Helps the team understand capacity and focus |
| Discusses the proposed Sprint Goal | Facilitates discussion and collaboration |
| Answers business questions | Helps remove planning obstacles |
Developers decide how much work they can take and how they will perform it.
Simple distinction
Product Owner: Are we building the right product?
Scrum Master: Are we using Scrum effectively to build it?
Teaching line
The Product Owner leads product value and priority. The Scrum Master leads process improvement, facilitation, and team effectiveness.
