Application development these days often requires maintaining and securing credentials for numerous third party services and external tools. Your database, error tracker, and email integration services all require you to present a token or password for authentication and authorization.If you’re keeping your source code out in the open, like on GitHub or CodePlex, or what-have-you, you want to be careful to keep those secrets to yourself.
Read more: Keep Your Azure Secrets Safely Out Of Git - by Matt Burke.