The structure of the URL is the web address of your site and its subpages.
You have two basic choices when it comes to the selection of URLs: absolute URL and relative URL.
An absolute URL contains the entire address from the protocol (HTTPS) to the domain name (www.example.com)
Basically, it’s the full URL of the page that you link to.
An example of an absolute URL is:
<a href = http://www.example.com/xyz.html>
The relative URL, on the other hand, does not use the full web address and only contains the location following the domain. It assumes that the link you add is on the same site and is part of the same root domain.
An example of an relative URL is:
<a href = “/xyz.html”>