What is Hosting?

Hosting is a service that allows individuals and organizations to make their website accessible on the internet. When you buy a hosting plan, you're essentially renting digital space on a server. This server is a powerful computer that stores all the files, data, and code that make up your website. It's connected to the internet 24/7, so when someone types your website's domain name into their browser, the server sends those files to their computer, displaying your site. Think of it as renting a plot of land to build a house; the hosting provider owns the land (the server) and gives you a space to build your online presence. Without hosting, your website would only exist on your personal computer.

We can say that hosting is one kind of service; it provides space to the server for the website to make access on the internet.

Hosting is essentially the infrastructure that keeps a website online.
The part many people overlook is performance — things like server caching, storage type (NVMe vs SSD), and how well PHP is optimized can make a big difference in the actual speed users experience.

In short a domain name is your website. For eg xyz.com is your domain so it is your website.