What advantages can you gain by capturing and applying lessons learned in a multi-phased project?

Documenting lessons learned provides a way to pass on and usefully apply knowledge gained in one project to other projects. This saves time and money by preventing mistakes, streamlining work processes, and freeing staff to deal with unique aspects of later phases.

Purchases made in earlier phases can be reused in later phases, saving money through efficient management of resources and negotiation of discounts with vendors as project managers learn to work with vendors.

Since every phase is different, the only advantage of moving solutions forward is to know what has already been tried as learned from a previous situation.

People learn what works and how to get along with their peers and leaders. As a result, teams can be organized so conflicts can be avoided since interpersonal relationships have already been tested.