Amazon WorkSpaces guidelines for concurrent build for scale

The customer can send the next "batch" through as quick as the API endpoints can handle the ingest, but the builds may get queued up in the back end for very large builds. PowerShell is very good at handling batching, retries, and back off for you, which may also be helpful. Each region has its own limits on max numbers of builds (both on a per account as well as a per region basis) to help prevent the total environment from being affected, which is why there is a queuing process in place.