Behavior-driven development (BDD) combines techniques from test-driven development (TDD) and domain-driven design to help developers build the right software by providing clear requirements. It uses examples in the form of scenarios and stories written in a common language to describe features from the perspective of stakeholders. This improves communication between business and technical teams and allows for automated acceptance testing. When done well, BDD can help deliver higher quality, better tested software that meets real business needs.