I was on a team at Microsoft that was strictly Waterfall; our business reps wanted to release functionality in six month cycles, so Waterfall was a good fit. W

I was on a team at Microsoft that was strictly Waterfall; our business reps wanted to release functionality in six month cycles, so Waterfall was a good fit. We eventually moved to Lean (a type of Agile) which worked well with this six-month requirement. It gave engineers the ability to work on different pieces and in whatever order they pleased, as long as everything landed in the six-month block.