I have personally have nothing against Terraform, and we’re using it for a lot of infrastructure-heavy things on our platform, but I think there are way better frameworks when deploying Lambda function.

Particularly the Serverless framework will save you A LOT of boilerplate IAC regarding all the event-driven integrations Lambda currently has to offer, and manages the full build and packaging cycle with the relevant language specific plugins, e.g. for Node or Python.

Others are the CDK, SAM or ARC.