With the adoption of competency-based medical education, assessment has shifted from traditional classroom domains of knows and knows how to the workplace domain of doing. This workplace-based assessment has 2 purposes; assessment of learning (summative feedback) and the assessment for learning (formative feedback). What the trainee does becomes the basis for identifying growth edges and determining readiness for advancement and ultimately independent practice. High-quality workplace-based assessment programs require thoughtful choices about the framework of assessment, the tools themselves, the platforms used, and the contexts in which the assessments take place, with an emphasis on direct observation.