Referring to the generation of Internet technologies that allow for interactivity and collaboration on websites. In contrast to Web 1.0 (roughly the first decade of the World Wide Web) where static content was downloaded into the browser and read, Web 2.0 uses the Internet as the platform. Technologies such as Ajax, which allow for rapid communication between the browser and the web server, underlie many Web 2.0 sites. The term was popularized by a 2004 conference, held by O’Reilly Media and MediaLive, called Web 2.0. (Also see Ajax)

Sometimes used to refer to the semantic web. (Also see semantic web) webOS — Operating system used on the latest generation of Palm smartphones, including the Pre and the Pixi. Apps for webOS are developed using web standards (HTML, Javascript, and CSS), which means there is a low barrier to entry for web developers to create mobile apps for webOS as compared to other mobile platforms. It allows for having several applications open at the same time, unlike the current iPhone.

The measurement and analysis of data to inform an understanding of user behavior across web pages.

A web page is a single document, generally written in HTML/XHTML, meant to be viewed in a web browser. In many cases, web pages also include other coding and programming (such as PHP, Ruby on Rails, or ASP). Websites are generally built from multiple interlinked web pages.

A web server is a computer that has software installed and networking capabilities that allow it to host websites and pages and make them available to internet users located elsewhere. There are various setups that can be used for a web server, including the LAMP setup previously mentioned.

Standards are specifications recommended by the World Wide Web Consortium (W3C) for standardising website design. The main purpose of web standards are to make it easier for both designers and those who create web browsers to make sites that will appear consistent across multiple platforms.

A webinar is a seminar conducted over the internet using video conferencing, instant messaging and VOIP services. Webinars are generally hosted by an organisation or company and broadcast to a select group of individuals.

The process of using controlled experimentation to improve a website's ability to drive business goals.

The process of creating customized experiences for visitors to a website.

A whitelist is a list of email addresses or domain names from which an e-mail blocking program will allow messages to be received.

In a web context, this refers to a portable application that can be embedded into a third-party site by cutting and pasting snippets of code. Common web widgets include a Twitter box that can sit on a blog or a small Google Map that sits within an invitation. Desktop widgets, such as ones offered for the Macintosh Dashboard or by Yahoo!, can be placed on the desktop of a computer, such as for weather or stocks. Similarly, Android offers the ability to add widgets to the home screens.

A website with pages that can be easily edited by visitors using their web browser, but generally now gaining acceptance as a prefix to mean “collaborative.” Ward Cunningham created the first wiki, naming it WikiWikiWeb after the Hawaiian word for “quick.” A wiki enables the audience to contribute to a knowledge base on a topic or share information within an organization, like a newsroom. The best-known wiki in existence is Wikipedia, which burst onto the scene around 2000 as one of the first examples of mass collaborative information aggregation. Other sites that have been branded “wiki” include Wikinews, Wikitravel, and WikiLeaks (which was originally but is no longer a wiki).

The most popular blogging software in use today, in large part because it is free and relatively powerful, yet easy to use. First released by Matt Mullenweg in 2003, WordPress attracts contributions from a large community of programmers and designers who give it additional functionality and visual themes. Sites that use WordPress include the New York Times blogs, CNN and the LOLCats network. It has been criticized for security flaws.