Behavior Driven Development

Behavior Driven Development is described as a refinement of Test Driven Development that shifts attention from code internals to the user experience and intent. Instead of writing tests only for developers, BDD uses executable specifications that create a dialogue between engineers and the people who will use the software. The article emphasizes that this is more than a stylistic change, because the specification formalizes a shared contract about expected behavior. Gherkin is used as an example of a human-readable yet machine-executable format that makes this possible. The author highlights how BDD can surface the user’s perspective and make software expectations clearer across roles. In this framing, BDD becomes a foundation for communicating not just behavior but also purpose.