What is TDD?
Test-Driven Development: a software development practice where you write a failing test before writing the code to make it pass. The cycle is: Red (write failing test), Green (make it pass), Refactor (clean up).
My perspective
In practice
A discipline that produces cleaner, more reliable code by forcing clarity of intent before implementation. It's deliberate practice applied to software: each red-green-refactor cycle is a micro-learning loop.