Is Agile different from TDD ? If so what are the main differences? [closed]

Question

Is Agile really different from TDD ? If so what are the main differences ?

Answer 1

Agile is anything that is inline with the values listed here - http://agilemanifesto.org/

XP (Extreme Programming) is a methodology that qualifies as agile. There are others too (Scrum, Crystal, etc..)

TDD (Test Driven Development) is a specific engineering practice from XP - which is a way to write code + drive design in incremental chunks. You write a test first, make it pass with the simplest possible change and then refactor to improve the structure/design. You do this in a loop till you're done.