Test-Driven Development (TDD) is an agile software development practice where developers write tests before writing the corresponding code, ensuring that each piece of code meets its requirements before it is fully implemented. This cluster focuses on helping learners adopt TDD to improve code quality, reduce bugs, and ensure that software behaves as expected. By mastering TDD, professionals can build more reliable and maintainable software while fostering a disciplined approach to coding.

This cluster is particularly valuable for software developers, quality assurance engineers, and agile practitioners. Practical outcomes include improved test coverage, better alignment of code with user requirements, and a reduction in post-release defects.

Learners will explore techniques such as writing unit tests, integrating TDD into the development process, and using TDD tools effectively. Tools like testing frameworks (e.g., JUnit, NUnit), continuous integration systems, and code coverage analysis tools will be covered to help learners implement TDD practices effectively in their workflows.