Behavior Driven Development (BDD) is an Agile software development approach that focuses on defining the behavior of a software application in a way that is understandable by all stakeholders, including developers, testers, and business analysts.
It is based on the principles of Test Driven Development (TDD), but it emphasizes collaboration and communication between team members. It uses natural language descriptions of features, scenarios, and acceptance criteria to define the expected behavior of the software.