AWS Lambda Application with Integration and Production Environments

How would I go about creating two separate environments for an AWS Lambda Application? I'd like to have my changes auto deploy to an integration environment, but require an extra step like a button click to get out to prod. The integration and prod environments would have their own Lambdas and API Gateways. Another way could be to have an integration git branch that auto deploys to integration and a prod branch that auto deploys to prod.