The primary purpose of the BABOK® Guide is to define the profession of business analysis and provide a set of commonly accepted practices. It helps practitioners discuss and define the skills necessary to effectively perform business analysis work. The BABOK® Guide also helps people who work with and employ business analysts to understand the skills and knowledge they should expect from a skilled practitioner.

Business analysis is a broad profession in which business analysts might perform work for many different types of initiatives across an enterprise. Practitioners may employ different competencies, knowledge, skills, terminology, and attitudes that they use when performing business analysis tasks. The BABOK® Guide is a common framework for all perspectives, describing business analysis tasks that are performed to properly analyze a change or evaluate the necessity for a change. Tasks may vary in form, order, or importance for individual business analysts or for various initiatives.