What are deep pages?
If you have a website with many webpages, and in this case, you might structure webpages inside logical subfolders – just like when you save particular documents in a particular file on your computer. (See right)
In the same way, if you had many services, you would use deep pages to insert every service you provided inside your service page
This is how deep pages work: they are subpages within a large page that customers can click to access a particular piece of information.