title: How to limit AWS Lambda instances without reserve concurrencies?
body: <p>After reading <a href="https://docs.aws.amazon.com/lambda/latest/dg/configuration-concurrency.html#configuration-concurrency-reserved" rel="nofollow noreferrer">the documentation</a> is still can not figure out. IF there is a way to limit AWS lambda without reserving concurrencies. IS it possible? If yes, how?</p>