Web Hosting Glossary

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UNIX
A server-oriented multitasking and multi-user operating system, with a reputation for stability and versatility. It is the most common operating system for servers on the Internet, and is available in a vast range of flavors, from the Linux family of operating systems to FreeBSD.

UNIX Hosting
Web hosting that is housed on a UNIX-based server, such as Linux or FreeBSD, and is usually facilitated by the Apache web server software. This is easily the most popular and commonplace platform for web servers and web hosting, the primary alternative being Windows based hosting.

URL (Uniform Resource Locator)
The standard addressing format used for HTTP requests. URLs resolve the protocol to be used for the request, the IP address of the host to which the request is to be made, and the location on that host where the resource is located.

Unlimited Bandwidth
This is a policy wherein additional charges are not incurred on account of “excessive” bandwidth usage. Technically, there is no such thing as “unlimited” bandwidth, and in practical terms simply indicates that there is not a hard limit on bandwidth usage, rather an understanding that reasonable bandwidth usage is always permitted.

Uptime Guarantee
A guarantee that provides for compensation in the event that the uptime of a server does not meet a predefined percentage of time in a set timeframe, usually on a per month basis. Uptime guarantees of 99.9% per month have become common.