How the internet works under the hood

We use the internet every day, but do we know how it works? Wikipedia defines the internet as follows:

“The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries a vast range of information resources and services, such as the interlinked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and file sharing.”

Basically, the internet is a global system that connects computers together through networks and employs certain protocols and techniques to enable that communication in a resilient way. The internet is used by all kinds of entities...