Want to focus on business logic and let the cloud handle the rest? That’s what Azure Functions offers - an event-driven way to run small pieces of code (“functions”) in response to triggers such as HTTP requests, queue messages or scheduled jobs.

The service integrates closely with other Azure services and supports multiple languages (C#, JavaScript/TypeScript, Python, Java and more). You choose a trigger and event source, write your code and Azure handles scaling and runtime.

One major advantage is infrastructure abstraction - you typically only pay for actual execution and don’t worry about server configuration, patching or capacity planning. There are multiple hosting plans (Consumption, Premium, Container Apps, etc.) to suit different requirements and scale.