In order to request information on the World Wide Web, resources must have an address they can be located at. This address is located using a URL. An example of a URL is https://google.com?search_term=hello%20world.
A full URL is made up of the following parts https://user:password@www.example.com:80/search?q=term&lang=en#results
The internet is a complicated construct. Requests and responses moving at nearly the speed of light in some cases zip over the internet cables delivering packets of data between computers. Let's take a short look at how these request/responses find their destinations.