Behaviour-Driven Development (BDD) is a software development methodology that focuses on defining the behaviour of an application in plain language, making it accessible to both technical and non-technical stakeholders.
- It uses scenarios written in a structured format like Gherkin (e.g., “Given, When, Then”) to describe the expected behaviour of the system.
- These scenarios act as a bridge between business goals and technical implementation, ensuring everyone understands and agrees on the requirements.
- Tests are written to validate these behaviours, promoting collaboration, clear communication, and alignment between developers, QA, and business teams.
- BDD emphasises delivering value by focusing on the “why” behind the feature.
Essentially, it’s TDD, but from a user’s perspective.