Web hosting geared towards the mission-critical functions demanded by business-class customers is known as Business hosting. Unlike free hosting and cheap hosting, business hosting is for profitable companies who have the motto: "Time is Money."
In addition to the standard features like storage, bandwidth, etc. business hosting focuses on issues such as reliability (uptime, monitoring, backups) and support (true 24/7 help via phone, email and/or IM). Business web site hosting often has a higher expense depending upon the size and type of the site.