BOK, or "Body of Knowledge," refers to a comprehensive set of concepts, terms, and activities that make up a professional field. It serves as a framework for understanding the essential knowledge required for practitioners in various disciplines, such as project management, software engineering, or accounting. The purpose of a BOK is to provide a structured approach to learning and applying knowledge, ensuring that professionals are equipped with the necessary skills and information. Organizations often develop their own BOK to standardize practices and enhance the quality of work within their industry.