One concurrency = one build at a time
This means that if you trigger 5 builds, you have to wait for each one to finish before the next one can start. However, if you have 5 concurrencies, the builds will run parallel.
Well, that’s enough math for one day.
How many concurrencies do I need?
Our customers use averagely 1 concurrency per full-time developer. Of course it can depend on your project count, release flow and so on. If you can’t make up your mind, we're happy to set you up with a trial to help you figure out how many works best for you.