Web hosting is the service that stores your website’s files on a server and delivers them to anyone who visits, keeping your site available on the internet around the clock. Every site needs it. When someone types your address, their browser asks your host for the pages, and the host sends them back. Your domain name is the address; the hosting is the actual building the address points to.
For a small business, hosting is one of the biggest hidden factors in how fast your site feels. Cheap shared hosting packs many sites onto one crowded server, so yours can slow to a crawl when a neighbor gets busy. Better hosting responds quickly and stays up, and since a slow first response drags down your whole page speed, the plan you are on quietly shapes the experience every visitor has.
Hosting is also where reliability lives. A host that goes down takes your site with it, and an outage during business hours is lost inquiries you never even hear about.
I host every site I build on fast, modern infrastructure with a global content delivery network in front of it, because a site that is slow or offline cannot be read by a customer or an assistant. Good hosting is the quiet floor the rest of the site stands on.