title: Working around AWS Step Function Map concurrency limit
body: <p>I have a <code>Map</code> task in an AWS Step Function which executes 100-200 lambdas in parallel, each running for a few minutes, then collects the results. However, I'm running into throttling where not all lambdas are started for some time. The <a href="https://docs.aws.amazon.com/step-functions/latest/dg/amazon-states-language-map-state.html" rel="nofollow noreferrer">relevant AWS documentation</a> says you may experience throttling with more than ~40 items, which is what I believe I'm running into.</p>
  <p>Does anyone have any experience with working around this concurrency limitation? Can i have nested Maps, or could I bucket my tasks into several Maps I run in parallel?</p>