Structure means the policies, standards, processes, and procedures that set the stage for how the corporation and its individual organizational units carry out business on a daily basis. Two principles govern Lessons Learned for multiple projects in a project environment: The structure of the project environment influences project and project team behavior; Project environments are dynamically complex. Project environments may be viewed and described by key elements of organizational dynamics, including vision, mental models, systemic structure, patterns of behavior, and events. The project team behavior in each case was driven by that structure or by the policies in place. So the leveraging factor in improving the performance of those project teams and the projects resided in an examination of the project environment. One of the key factors that contribute to the project environment playing such a role in key Lessons Learned is the dynamic complexity inherent in the project environment.