Per origin host header - available before?

Was this feature previously available/emulated by writing your own Worker or not?

Although this feature is in the “Load Balancing” category, is this actually a general purpose web forwarding/URL rewriting feature? Your content server for whatever reason lives at at IP and that can’t be changed (CNAME useless), your domain is, but will never cough up your page if client host header is, and on there are 3 different customers, with domains (you) (random other customer) and (random other customer), so this new feature allows you to forward all HTTP reqs to and rewrite the Host: header to, but never reveal the domain (Location: header to outside of CF) or IP to eyeballs/clients. Am I understanding it correctly?

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