What is considered a "Best Practice" in the CMMI framework?

In the context of the CMMI framework, a "Best Practice" is recognized as a standard approach that has been proven to achieve superior results consistently across different organizations and projects. This definition underscores the importance of evidence-based methods that lead to effective outcomes, which are supported by data and successful implementations.

Best Practices are developed through the collective experiences of multiple organizations, allowing them to highlight strategies that lead to high performance and enhanced capability. By adhering to these proven strategies, organizations can streamline their processes, reduce variability, and ultimately improve their productivity and quality of deliverables.

In contrast, other options suggest either a lack of rigor, limited applicability, or optionality, which do not align with the essence of what constitutes a Best Practice in the CMMI framework.