Web-hosting service providers are companies which provide online systems that enable your small business or organisation to store and display information including text, images and video, and provide access to eCommerce and other interactive systems. They provide space for your web site and host your domain name on a web server they own and operate. They also provide the network connection to the wider internet, and implement appropriate security, reliability and availability measures.
If your small business or organisation is large enough to afford your own hardware, software and technical support – or the services of a cloud IaaS provider (see Using the Cloud) – you can implement web-hosting yourself.
There are a large number of web hosting providers as well as comparison sites. Just enter 'web hosting' into a search engine and look for comparison sites.