The Decision Analysis and Resolution (DAR) process is used to formally evaluate alternatives for significant decisions using established criteria. It involves identifying stakeholders, gathering input on alternatives and criteria, evaluating alternatives using ranking/scoring methods, selecting solutions, and conducting a post-mortem. The DAR process aims to make objective, evidence-based decisions in a structured manner. Roles like the program manager, team lead, and members are assigned to carry out tasks like planning the DAR, evaluating alternatives, and documenting the results.