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As someone new to serverless, are there ways for Cloudflare Workers to authenticate against a specific web app/SPA in cases where the app doesn't require user login/authentication to work? Or is that effectively impossible in that case?

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What sort of authentication? Are you trying to ensure that only your webapp hits your backend (which in this case is implemented in Workers)? That's generally impossible on the web, as all the code in the browser used to hit it is accessible to visitors.

> Are you trying to ensure that only your webapp hits your backend…? That's generally impossible on the web…

Yes, and thank you.

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