“Test-driven development” (TDD) plays a critical role in quality assurance by emphasizing the creation of automated tests before the actual code is written. This approach leads to a clearer understanding of requirements, ensures that code meets specifications, and reduces bugs in the development phase. By fostering a habit of writing tests first, developers create more maintainable and robust code, which ultimately leads to enhanced software quality. TDD contributes to faster feedback cycles, increased confidence when making changes, and helps maintain high standards throughout the software development process.