Two of the technical practices that focus on Built-in Quality are pair work and test-driven
development. Pair work is a collaborative technique where two developers work together on the
same code, one writing the code and the other reviewing it. Pair work improves the quality of the
code by reducing defects, increasing knowledge sharing, and enhancing creativity and problem-
solving. Test-driven development (TDD) is a practice where developers write automated tests before
writing the code, and then refactor the code until it passes the tests. TDD ensures that the code
meets the requirements and specifications, as well as improves the design, readability, and
maintainability of the code
