World Wide Web
The World Wide Web (World Wide Web, abbreviation: WWW) is a hypertext system provided on the Internet. Also known as Web, Web, W3. Colloquially, the term "Internet" is sometimes used to refer to the World Wide Web. The basis of the system is that the person responsible for providing information makes the web server public, and general users browse the information on the web server via a web browser. It is one of the most popular systems among the systems that emerged during the multimedia boom of the 1990s, and its specifications continue to be updated in line with technological progress. Now, specifications that go beyond the framework of hypertext have been added, and it is also used as a foundation for applications. In the 1980s, it also came to replace Videotex, which had been commercially developed independently in each country.
As a slang term for the opposite of the above, the word web is used to refer to the Internet itself. Although web technology is not necessarily used, such as web conferencing, there are things that are done via the Internet.
On the World Wide Web, hypertext description languages such as HTML and XHTML are mainly used to describe documents (web pages). Hypertext used on the World Wide Web is a system that allows documents scattered on the Internet to refer to each other by embedding a reference to the URL of another document in the document (this is called a hyperlink). be. The viewer can display the hyperlinked document by clicking or tapping the hyperlinked portion in the displayed document.
It was named the "World Wide Web," meaning a spider's web that spreads across the world, because the way the documents are connected to each other is reminiscent of a spider's web. Note that the spider web does not represent actual cable wiring. Since the HTML description method is relatively simple, it spread rapidly and widely.
Software (user agents) for accessing the World Wide Web is called a WWW client. Among them, the one intended for browsing by users is called a web browser (WWW browser, or simply browser). The software that provides World Wide Web services is called "WWW server software" or simply "Web server".
With the advent of portal search engines and web directories, the World Wide Web has slowly begun to come into its own. By putting into practice a method for determining the ranking of web pages based on mathematical theory, the number one search engine position was established in a flash. In contrast, the creation of a Web directory, which requires a collection of individual cases across all disciplines, is akin to the compilation of dictionaries accomplished through continuous, painstaking work. The former relies on mathematical methods, while the latter relies on taxonomic methods.
The idea of the hypertext implemented by the World Wide Web has its origins in the Xanadu Project, and its specifications are also described as a scaled-down version of the Xanadu Project. However, web applications and cloud computing realized by the World Wide Web far exceed the ideas of previous generation hypertext systems such as the Xanadu Project, which assumes strict rule operation.