Check this article from aws: https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtime-environment.html. It states: "The Init phase ends when the runtime and all extensions signal that they are ready by sending a Next API request. The Init phase is limited to 10 seconds. If all three tasks do not complete within 10 seconds, Lambda retries the Init phase at the time of the first function invocation with the configured function timeout.". Consider all the lifecycle as it would not be a fixed delay, if SnapStart is activated, the function will be cached and the delay will be reduced.