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Behavior driven development (BDD), also spelled behaviour driven development, is an Agile practice where developers, testers and business stakeholders agree on how software should behave before it is built. The team describes that behavior as concrete examples written in plain language, usually in a Given-When-Then format, and then turns those examples into automated tests.

This glossary page covers how BDD grew out of TDD, how the three amigos meeting works, and what a Gherkin scenario looks like in practice. It also lists the common tools like Cucumber, SpecFlow and Behave, and explains

Generate comprehensive API test suites from endpoints, curl commands, or OpenAPI specs in seconds. AI-powered testing with 90%+ coverage, zero flaky tests, and native CI/CD integration.

Compare the 12 best API testing tools in 2026 organized by use case. Covers automation, manual testing, performance, and security.

Learn about API mocking, its benefits, types, tools, and how it accelerates development by enabling testing without live APIs

A practical breakdown of software testing strategies: the main types, real-world examples, and best practices for Agile, API-first, and CI/CD-driven teams. A useful reference for structuring test coverage as a codebase scales.

Learn what a test environment is, why it matters, components, setup, challenges, and QA/DevOps best practices, with modern tooling like Keploy.