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Cloudflare Launches Worker Previews, Giving Each Git Branch Its Own Isolated Environment

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Cloudflare introduced Worker Previews on September 22, 2026, which gives every Git branch a production-like environment with its own code, configuration, URL, observability, and state. Developers can create an isolated Preview per branch using a Wrangler command, with separate variables, secrets, and bindings, and with Durable Objects and Containers scoped to that branch. Preview URLs remain stable per branch, can use a custom domain, and can be protected with Cloudflare Access. Observability such as logs, errors, metrics, and traces is scoped to each Preview, letting agents and developers validate runtime behavior without touching production.

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