How does your organization capture and share project management best practices, lessons learned and artifacts like templates, examples etc.?

I would suggest some "central function, hub or deptartment" to be the repository of all project management experiences ... along with proper reporting, analysis and assessment of success (or failures) and the reasons behind it ... etc .. etc .. etc. A project management office (PMO) could be ideal for such a role

We can depend on any historical information if:

1- It is accurate.

2- It is scalable.