Test-Driven Development
Test-Driven Development (TDD) is a software development methodology where developers write automated tests before writing the actual code, following a cycle of 'Red-Green-Refactor'. It emphasizes creating small, incremental tests to define desired functionality, then implementing code to pass those tests, and finally refactoring for improved design. This approach ensures code reliability, reduces bugs, and promotes clean, maintainable software architecture.
Developers should use TDD when building complex or critical systems where reliability and maintainability are priorities, such as in financial applications, healthcare software, or large-scale enterprise projects. It helps catch defects early, reduces debugging time, and encourages modular, testable code, making it ideal for agile environments and teams practicing continuous integration.