Web servers are computers that are connected to the Internet, or intranet, to serve the requests that comes from the web browser of client computers or mobile devices. To understand this better, look at the following picture:
So, as shown in the preceding picture, a webserver is basically the computer which hosts the webpages and does the processing based on the requests sent from the web browser on the client's device. The client's device can be either a PC, laptop, mobile phone, tablet, or anything else which has a web browser, or a Linux shell that can make HTTP requests.
Go ahead and look at the following picture to understand this better:
Now in this you can see that multiple clients are connected to multiple servers via the Internet, that is the World Wide Web (WWW), TCP/IP Network.
What is TCP/IP? What exactly happens when you type a URL into your browser and hit enter?
Look at the following picture to understand more:
