Wiki:Internet hosting service
An Internet hosting service is a service that runs Internet servers, allowing organizations and individuals to serve content to the Internet. There are various levels of service and various kinds of services offered.
A common kind of hosting is web hosting. Most hosting providers offer a combination of services; e-mail hosting, Website Hosting, Database Hosting for example. DNS hosting service is usually bundled with domain name registration.
Generic kinds of Internet hosting, that provide dedicated hosting, provide a server where the clients can run anything they want (including web servers and other servers) and have Internet connections with good upstream bandwidth.
Another popular kind of hosting is shared hosting. This is where the hosting provider provisions hosting services for multiple clients on one physical server and shares the resources between the clients. Virtualization is key to making this work effectively.