Which project management maturity level involves applying lessons learned to improve processes?

The project management maturity level that emphasizes applying lessons learned to improve processes is the level referred to as "Sustained." At this maturity level, organizations focus on continuous improvement by systematically capturing insights from completed projects and incorporating those lessons into their practices. This approach not only enhances the efficiency and effectiveness of future projects but also fosters a culture of learning and adaptation within the organization.

In contrast, the other levels may not prioritize the same depth of reflection on past experiences. For example, planned may emphasize setting up processes but lacks the iterative refinement found in the sustained level. Integrated might focus on aligning processes with organizational goals, while managed is likely rooted in establishing metrics and control mechanisms. The sustained level is distinct in its commitment to perpetual enhancement informed by past outcomes, thus improving overall project management capabilities.