This document discusses using serverless technologies like AWS Lambda and AWS Cognito to protect content. It outlines challenges with traditional authentication on physical infrastructure that requires maintenance and over-provisioning. Serverless applications can be written once and run globally across AWS without managing servers. Lambda functions can be triggered by events from services like API Gateway and S3. Lambda@Edge allows running code close to users to inject security headers, do stateless/stateful authorization, and customize content for different devices through template rendering, personalization, and A/B testing while routing based on content, location, or SEO.