Serverless computing is a cloud computing model where the cloud provider manages resources dynamically based on application demand. Customers pay based on actual resource usage rather than pre-purchased capacity units. While servers are still required, serverless computing aims to abstract away server management. The document then provides examples of serverless platforms like Azure Functions, AWS Lambda, and Google Cloud Functions. It also outlines a sample project using serverless technologies like Azure Functions and Logic Apps to build a custom RSS feed service that can schedule jobs, parse feeds, notify subscribers of updates, and allow adding new subscribers.