What is BDD (Behavior-Driven Development)?
Turkish: BDD
BDD describes expected behavior with Given-When-Then scenarios, creating a shared language between business and technical teams.
What is BDD?
BDD (Behavior-Driven Development) is a development practice focused on describing observable software behavior before implementation details. Its purpose is to help business stakeholders, testers, and developers discuss the same scenario language.
How Does It Work?
BDD scenarios are commonly written in a Given-When-Then structure: the starting condition, user or system action, and expected result are stated clearly. For example, “Given the customer has an item in the cart, When payment is approved, Then an order is created” describes both the business rule and the test expectation.
These scenarios can be connected to automated tests with tools such as Cucumber, but BDD’s main value is shared understanding before test automation.
Business Use
BDD reduces ambiguity in complex approval rules, payment flows, campaign conditions, and enterprise processes. TDD guides code design with tests, while BDD emphasizes describing behavior in business language.
BDD should not become ceremony for its own sake. Scenarios are most useful when they stay short, example-driven, and focused on clarifying real decisions.