The importance of involving the Scrum team in lessons learned workshops, even after a successful project delivery, is emphasized in project management methodologies. Lessons learned are a vital part of project closure, as they provide documented information that reflects both the positive and negative experiences of a project. They are crucial for the team, the organization, and for the success of future projects. The Scrum team's involvement ensures that insights and retrospectives are comprehensive, covering all aspects of the project's execution123. Moreover, in Scrum, every sprint is considered a project, and the framework is designed to maximize value and control risk through continuous feedback, which includes lessons learned from each sprint4.
References: = Lessons learned are an integral part of project management excellence and are strongly encouraged by the project manager from the beginning of the project1. The Project Management Body of Knowledge (PMBOK) also highlights the significance of project closure and lessons learned review as they help finalize project deliverables, evaluate project performance, document project outcomes, and capture project learnings3. Additionally, Scrum.org emphasizes that Scrum does not include "closing a project" but rather retiring a product, and the continuous improvement and learning from each sprint are fundamental to the Scrum process4.