For those using Serverless, being able to upload just the code (not a full Cloudformation stack) is built in, and will save you tons of time. Also, do what you

For those using Serverless, being able to upload just the code (not a full Cloudformation stack) is built in, and will save you tons of time. Also, do what you can to limit/optimize your npm modules (if you're using node) since it has to be uploaded every time.