Considerations when choosing codecommit or github?

I am building a new application using mostly serverless products (apig, lambda, dynamodb, code pipeline, etc..) and determining if I should use codecommit or github. I plan to leverage as much of the AWS ecosystem as possible, but are there features or limitations in either that need to be considered? This will be for a company that is growing fast, so the aws environment and code, functionality, will grow over time as well.