For high volume Lambda invocations in accounts with multiple Lambdas, it's best practice to set per-function concurrency limits (https://docs.aws.amazon.com/lambda/latest/dg/concurrent-executions.html). This can be done using https://docs.aws.amazon.com/lambda/latest/dg/API_PutFunctionConcurrency.html.

It would be great to have this setting be available alongside things like memory and timeout settings in config.json.