Each member of the project team is capturing their lessons learned. This information is being gathered to inform what went well with the project as well as what can be improved in the next project.

While the project team members contribute to capturing lessons learned, they typically focus on their specific roles and tasks within the project. They may provide insights on what went well or what could be improved, but it is the PMO that centralizes this information and ensures it is systematically documented for organizational learning.

The project manager plays a crucial role in guiding the project to completion and may facilitate the lessons learned process. However, the responsibility for gathering and formalizing this information generally lies with the PMO, which serves a broader function in managing and disseminating project knowledge across multiple projects.

The project sponsor provides support and resources for the project, but they are not typically involved in the day-to-day operations or the detailed capturing of lessons learned. Their focus is more on strategic oversight and accountability rather than the operational aspects of documenting lessons for future projects.