Who can participate in the scrum retrospective, only the scrum team or the product owner also?

The Sprint Retrospective is a time to look back at the process, so it’s an opportunity to review and adjust the process. The entire Scrum team must participate. This includes all members of the development team, including all members who design, build, and test the product, the Scrum Master, and the product owner. The Scrum Guide also includes the Scrum Team = Product Owner + Scrum Master + Development Team, so it can be inferred (at least officially) that the Product Owner can participate in the retrospective. This is an ideal scenario.

However, the team may not want to include the product owner because it can interfere with the discussion. If there is a lack of trust between the product owner and the development team, the level of security is low, and you are not good at speaking openly, the product owner will participate until the Scrum Master can more safely guide the people involved in the creation. You may not want to. , A more reliable environment. People other than the direct Scrum team, especially the managers of team members, should not be invited to participate.