I agree the vendors needs to solve this. In the meantime I think you can hack it by using Kinesis shards ( one lambda per shard ) if you know you will need many

I agree the vendors needs to solve this. In the meantime I think you can hack it by using Kinesis shards ( one lambda per shard ) if you know you will need many lambdas in advance. https://github.com/awslabs/aws-lambda-kinesis-prewarming https://github.com/awslabs/aws-lambda-kinesis-prewarming