It became essential for businesses to protect their applications, services and customer data from attackers. If you want to stay competitive, knowing how to efficiently and easily apply security and auth while being aware of the most common pitfalls is key in today’s serverless world. Traditional machine-to-machine auth approaches where you can rely on a stateful environment fall short in a modern serverless and thus stateless world. After a short recap of some auth fundamentals, you’ll learn how to efficiently apply authentication to Azure Functions without compromising security – using an external Identity Provider like Auth0, OAuth 2, JWT, the secrets management system Azure Key Vault, Azure Managed Identities and Cloudflare Workers.