startRunBatch
Starts a batch of workflow runs. You can group up to 100,000 runs into a single batch that share a common configuration defined in defaultRunSetting. Per-run overrides can be provided either inline via inlineSettings (up to 100 runs) or via a JSON file stored in Amazon S3 via s3UriSettings (up to 100,000 runs).
StartRunBatch validates common fields synchronously and returns immediately with a batch ID and status PENDING. Runs are submitted gradually and asynchronously at a rate governed by your StartRun throughput quota.