What is Cloudflare Workers?

What is Cloudflare Workers?

Cloudflare Workers is a serverless platform for running JavaScript, TypeScript, and Web API based code on Cloudflare’s edge network. An incoming HTTP request reaches the worker, and the code can return a response, call another service, redirect traffic, or apply a security check.

Workers do not require managing servers or containers. The execution model is based on lightweight isolated runtimes, allowing requests to be handled close to users with low latency.

Common Use Cases

API proxies, webhook verification, A/B routing, URL rewriting, authentication checks, cache logic, edge form handling, and small backend services are common Worker scenarios. With Cloudflare services such as KV, D1, R2, Queues, and Durable Objects, larger applications can also be built.

Design still matters. CPU time, outbound calls, secret management, and error observability should be planned. Not every workload belongs at the edge; heavy reporting and long background jobs may fit separate systems better.

Cloudflare provides the network, DNS, and security foundation around Workers. In a serverless model, much of the capacity management is delegated to the platform.