When we want visit any web page, as user, we only have the web name, it is the domain, example: domain.com.

That website is alocated in anyplace in the big cloud system, and our dispositive makes a request through the internet browser to find it.

The browser just review what this domain means, because, this domain is really a human interpretation of a code.

That code is basically

Once the code is readed, the browser makes some comparations withthe cache, to find fastly the site, and if that is not found, the browser continue with other comparasions.