A more refined and business value derived approach for test-driven development is behavior-driven development (BDD), to ensure we are building the right product with no features or tests that don't add business value. The following diagram represents what BDD brings in addition to the TDD approach. It is a more feature-centric development:
Throughout the natural evolution of testing from TDD and AMDD to BDD, the need for the regression testing of software components as we keep upgrading features has increased. This regression testing will consume more time and budget if handled manually. Hence, the need for ...