What’s in an AMP URL?

Google has introduced a feature in its AMP integration in Google Search that allows users to access and share the canonical URL of an AMP document, addressing concerns about URL confusion and content attribution. AMP documents typically have three types of URLs: the original URL, the AMP Cache URL, and the Google AMP Viewer URL, each serving different purposes such as caching and pre-rendering to enhance speed and performance. The AMP Cache URL is used to efficiently deliver content through Google's infrastructure, while the AMP Viewer URL facilitates pre-rendering for an instant loading experience by using a hidden iframe. To mitigate confusion and potential security risks, AMP viewers display a header bar that clarifies the content's original source. Google is committed to improving the AMP experience, including implementing features that make it easier for users to share the original URL and exploring new web platform APIs like the Web Share API to further enhance functionality.