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Signed HTTP Exchanges (SXG)

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Part of the Web Packaging spec, Signed HTTP Exchanges allow a different origin server to provide a resource, and this will be treated as if it came from the original server. This can be use with AMP CDNs, for example, to allow the original URL to be displayed in the URL bar.

Further reading:

  1. Can I use page for: Signed HTTP Exchanges (SXG)
  2. Chrome platform status - Shipped
  3. Microsoft Edge Platform Status - Supported
  4. Signed HTTP Exchanges on Google's Web Development site
  5. Developer Preview of better AMP URLs in Google Search
  6. Signed-Exchange: Solving the AMP URLs Display Problem
  7. GitHub home page for Web Packaging
  8. Mozilla's Position about Signed HTTP Exchanges (harmful)