Is It Mandatory To Create A Subdomain When Setting Up @id?

By April

YouTube video

In episode 243 of the weekly Hump Day Hangouts by Semantic Mastery, one viewer asked if it is mandatory to create a subdomain when setting up @id.

The exact question was:

For @id, is it mandatory to create a subdomain or will the Amazon object URL be enough? Is there any advantage of setting it up to use a cname subdomain? What link should we use as the canonical URL in our @id? the main money site? the or the maps url?

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