A Web Hosting service allows individuals and organizations to make their own website accessible via the World Wide Web.
Web hosts the companies that provide space on a server they own or lease for use by their clients as well as providing Internet connectivity, typically in a data center. The host may also provide an interface or control panel for managing the Web server and installing scripts as well as other modules and service applications like e-mail. Some hosts specialize in certain software or services (e.g. e- commerce). They are commonly used by larger companies to outsource network infrastructure to a hosting company.
Web hosts can also provide data centre space and connectivity to the Internet for servers they do not own to be located in their data centre, called collocation or Housing as it is commonly called in Latin America or France. The scope of web hosting services varies greatly. The most basic is web page and small- scale file hosting, where files can be uploaded via File Transfer Protocol (FTP) or a Web interface. The files are usually delivered to the Web “as is” or with little processing. Many Internet service providers (ISPs) offer this service free to their subscribers. People can also obtain Web page hosting from other, alternative service providers. Personal web site hosting is typically free, advertisement-sponsored, or inexpensive. Business web site hosting often has a higher expense. Single page hosting is generally sufficient only for personal web pages. A complex site calls for a more comprehensive package that provides database support and application development platforms (e.g. PHP, Java, and Ruby on Rails, Cold Fusion, and ASP.NET).
These facilities allow the customers to write or install scripts for applications like forums and content management. For e-commerce, SSL is also highly recommended.