The following definitions are courtesy of Wikipedia and Webopedia.
An application that runs on a personal computer or workstation that allows users to perform operations via a server.
The practice of using a network of remote servers hosted on the Internet, rather than a local server or a PC, to store, manage and process data. Shared resources, software, and information are provided to computers and other devices on demand. Applications are installed somewhere other than on your computer… they live “in a cloud” on the Internet.
A communications system that utilizes packet-switched telephony to transmit calls over the Internet as opposed to the circuit-switched telephony used by the traditional Public Switched Telephone Network (PSTN).
A category of hardware and software that enables people to use the Internet as the transmission medium for telephone calls. Telephone applications are bundled with Web browsers or are available as stand-alone products. (Webopedia)
The ability to detect the electronic presence of other users who are connected to the Internet, through a PC or mobile device, and whether they are available in real time.
An application that enables a desktop, laptop or workstation computer to function as a telephone via Voice over IP technology. Cables of a computer network transmit telephone service. It is equipped with a headset or a hand-held device, and utilizes the numbers on the keyboard to dial. Soft phones typically use the computer's sound card for audio input and output.
A communications system that encompasses a broad range of technologies and applications that have been designed, sold and supported as a single communications platform or as one entity. The systems generally enable companies to use integrated data, video, and voice in one supported product, and typically include the means to integrate real-time or near-real time unified messaging, collaboration and interactive systems. Unified communications incorporates collaboration, scheduling, workflow, instant messaging and voice response systems. It provides integration through multiple devices, including from a PDA, laptop or other wireless device, as if using a desktop PC.
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