Behavior Driven Development Behavior Driven Development (or BDD ) is an Agile software development technique that encourages collaboration between developers, QAs and non-technical or business participants in a software project. It was originally conceived in 2003 by Dan North as a response to Test Driven Development , and has evolved over the last few years. The focus of BDD is the language and interactions used in the process of software development. Behavior-driven developers use their native...