Kappa is a command line tool that (hopefully) makes it easier to deploy, update, and test functions for AWS Lambda. Kappa tries to help you with some of this. It creates all IAM policies for you based on the resources you have told it you need to access. It creates the IAM execution role for you and associates the policy with it. Kappa will zip up the function and any dependencies and upload them to AWS Lambda. It also sends test data to the uploaded function and finds the related CloudWatch log stream and displays the log events. Finally, it will add the event source to turn your function on.