Cloudflare launches Worker Previews with per-branch environments

Cloudflare introduced Worker Previews, giving each Git branch its own isolated, production-like environment with a stable URL, its own configuration and state. Previews are created with npx wrangler preview, and hundreds can run concurrently without touching production traffic. The feature targets agent-driven development.

• Each Git branch gets an isolated environment with a stable URL
• Previews are created via npx wrangler preview, hundreds run concurrently
• Wrangler creates separate Durable Object namespaces and Container apps per preview
• Limitation: service bindings still call the bound Worker's production deployment