if you have a website structure like this: www. example. com / index.html ............................/ customers / first_customer.html From the first page (index.html) you can link to the second either absolute (www. example. com / customers / first_customer.html) or relative (/customers / first_customer.html). More info here.
Absolute links refers to a complete or a full-qualified URL: "http://www.just-a-sample.com./Tutorials/page1.html" Relative links specifies the name of a certain file to be linked to (within the same directory or current document): "page1.html"