The difference between "agile" and "waterfall" isn't that easy to pin down.
Some people think of "agile" as just going through their full waterfall process every month or every two weeks.
Other people insist the core of "agile" is TDD, others claim nonsense, TDD is just as much part of "waterfall", and yet others don't see any point in TDD for their "agile" process.
Some people think of "agile" as just going through their full waterfall process every month or every two weeks.
Other people insist the core of "agile" is TDD, others claim nonsense, TDD is just as much part of "waterfall", and yet others don't see any point in TDD for their "agile" process.
tl;dr:
It's all bullshit, all the way down.