On: Google AMP Issue: Links to visit the site currently not working

[michaelmior]

Portal is moreso an alternative to iframes than an alternative to links. But it's true that it could very well make it more likely for a portal to another site to be included in a page rather than using a link.

[ehnto → michaelmior]

They still use a link to source the embedded page as well, it's just that a portal is a bit more friendly with the host frame.