Software testing is no longer a siloed phase that happens after coding is complete. Modern software quality is a product of integrated thinking across the development lifecycle. While both TDD and ATDD are driven by the principle of writing tests before code, they differ significantly in focus, participants, and outcomes. Knowing when and how to use each can lead to fewer bugs, faster feedback loops, and stronger alignment with business goals. https://testomat.io/blog/atdd-vs-tdd-understanding-the-key-differences/