Lambda provisioned concurrency
What is Provisioned Concurrency for AWS Lambda? AWS Lambda as a main building block of serverless world. Overall serverless computing is great for various use cases, but still has some limitations. One of them could be latency. When lambda hadn’t been used for some time an execution environment needs to be created. It can take from 200ms to even 600ms, depending on chosen language. So when latency is critical for your application, additional 600ms might be painful.