A Quick Glossary to Hosting Industry Jargon
Hosting often uses its own language, or languages, comprised of acronyms, proprietary names and terms that have
been granted new meanings. For some it's a first language. For others it's an entirely new language. This abridged
glossary is designed to assist in "translating" the more common hosting terms into more common language.
One of the world's most popular Web server programs, Apache was built by a group of open-source programmers and is
often used because of its outstanding performance, strong security features and the fact that it is free.
The software components that your custom application relies on for its functionality. Examples include web servers,
application servers and database servers.
The amount of data that can be transmitted at a given moment to a server. The higher your bandwidth, the larger
amount of traffic your site can handle at one time.
Short for Common Gateway Interface, a small script that processes data taken from the user (such as from a form
The directory on a web server where CGI scripts are stored.
A pool of highly available servers and computing services, made available for general use by web and other
Using cloud resources as a pressure valve when an increased amount of computer resources are required for a burst in
traffic, or short-term demand spikes in activity or load.
The sharing of compute resources (dedicated, time-shared, or dynamically shared servers) and related infrastructure
components (load balancers, firewalls, network storage, developer tools, monitors and management tools) to facilitate
the deployment and operation of web and network based applications. Cloud computing environments provide developers
and their customers direct on-demand access to large-scale and scalable computing capabilities, all at a fraction of
the cost of dedicated options such as managed data centers, colocation facilities, or private data centers. Cloud
resources are typically accessed via the public Internet.
Short for Distributed Denial of Service Attack, the most common form of attack on network devices. It overwhelms a
network by monopolizing its bandwidth by flooding it with information from multiple hosts, thereby preventing
legitimate network traffic.
Refers to the individual hardware components that make up a unique hosted configuration. This includes servers,
firewalls and load balancers.
A piece of security software or hardware designed to protect web servers. They are typically used to protect sites
from hacker attacks/unauthorized access.
Short for File Transfer Protocol, a method of allowing remote users and web servers to exchange files.
An architecture for server networking, whereby processing cycles of all computers in a grid network can be allocated to
a particular application. This differs from other architectures in that the integration is accomplished at the hardware
level, thereby making the grid appear as a single large resource, rather than a pool of shared autonomous resources.
Short for HyperText Markup Language, the language by which web servers and client browsers communicate. All server-side
functions (such as database processing), although they may be performed in another language, must eventually be output
back to the user in HTML.
Stands for HyperText Transfer Protocol, the protocol by which HTML files move across the Internet. HTTP requires a
client browser and an HTTP server (typically a web server).
Short for Intrusion Detection System, it recognizes all types of hostile network traffic and computer usage that
can't be detected by a conventional firewall.
Short for Internet Information Server, Microsoft's server software for Windows NT/2000.
Short for Internet Protocol, which designates the format of "data packets" that are used to exchange information
over the Internet.
Short for Java 2 Platform, Enterprise Edition, J2EE is a programming platform for developing and running distributed
multi-tier architecture applications, based largely on modular components running on an application server.
An acronym for a set of free software programs commonly used together to run dynamic Web sites:
- Linux, the operating system;
- Apache, the web server;
- MySQL, the database management system (or database server);
- Perl, PHP, and/or Python, scripting languages.
Distributing data across a network of servers in order to ensure that a single web server does not get overloaded
with work, thereby affecting performance.
Refers to the copying of data for the purpose of having an additional copy of an original source, specifically storing
data on separate tape media not located on the server. If the original data is damaged or lost, the data may be copied
back from that source.
A server responsible for translating domain names and IP addresses.
Short for Network Operations Center, a hosting company's "home base," so to speak. The NOC is usually where most
administration, technical support and physical server storage takes place.
Software applications provided through networks (such as the Internet) or as network-based services. On-demand software
delivery, for local installation and use, is sometimes referred to as software on-demand.
The method by which most data is exchanged throughout the Internet. Most data is broken down into smaller "packets"
prior to transfer, and then reassembled at the destination.
Platform as a Service
A SaaS variation, delivering integrated development environments as a turn key service.
Short for Redundant Array of Independent Disks, a method of data protection/backup. Data is stored over a number of
servers so that information will still be accessible if a piece of hardware/software crashes.
Short for Storage Area Network, a network designed to attach computer storage devices such as disk array controllers
and tape libraries to servers. In a storage network, a server issues a request for specific blocks, or data segments,
from specific disk drives. This method is known as block storage. The device acts in a similar fashion to an internal
drive, accessing the specified block, and sending the response across the network.
The ability to adapt to rapid changes in demand, by dynamically adding or removing cloud resources based upon performance
metrics and load thresholds. In more advanced environments, these resource allocations and de-allocations are fully
automated and near instantaneous, allowing for smooth operation of services.
Service Commerce Platforms
A hybrid of SaaS and managed service solutions, creating a cloud computing service offer as a full-service hub. These service
platforms are typically embedded, or integrated, with other service offerings to provide a complete application. In some cases,
service commerce platforms are fully self-contained, and targeted at vertical markets or trade groups as outsourced IT environments.
Service Level Agreement (SLA)
A formal written agreement made between two parties: the service provider and the service recipient. The SLA itself
defines the basis of understanding between the two parties for delivery of the service itself. The document can be
quite complex, and sometimes underpins a formal contract. Generally, an SLA should contain clauses that define a
specified level of service, support options, incentive awards for service levels exceeded and/or penalty provisions
for services not provided.
Provisioning of software and applications over the public internet, or private networks, on a shared basis. SaaS applications
typically provide equivalent functionality to dedicated single-purchase applications, however, they are delivered and used on a
month-by-month service contract or subscription basis. Some components may be required to operate locally.
Short for Standard Query Language. A standard protocol used to request information from databases. Servers that can
handle SQL are known as SQL servers.
Short for Secure Sockets Layer, a protocol developed by Netscape to handle and protect confidential/sensitive
information required for e-commerce transactions (like credit card numbers). SSL addresses usually begin with
Short for Virtual Private Network, a private communications network usually used within a company, or by several
different companies, to communicate over a public network.
Web hosting is a service that allows users to post web pages to the Internet. A web host, or hosting service
provider (HSP), is a business that provides the technologies and services needed for websites to be viewed on
Glossary provided by theWhir.com.
Short for Extensible Markup Language. XML is a language allowing developers to create their own markup tags. All
XML tags are defined by the programmer, and can be interpreted differently in different applications. For example,
the "" tag in HTML means Italics, but could mean anything in XML, depending on the function the developer assigns