This benchmark is really an esoteric performance comparison, because the AWS SDK isn’t monolithic anymore and you can only include the packages you need (assuming you aren’t using a minifier and tree shaker to reduce the parsed code anyway). It was only a monolithic library back in v1 and they’re on v3 now. For most use cases, you only need to load a small subset of the AWS SDK. I have certainly written node lambdas with only a few hundred ms coldstarts using multiple aws SDK libraries bundled in (secrets manager, dynamo, s3, parameter store…)