{"id":75287,"date":"2026-09-12T15:18:50","date_gmt":"2026-09-12T18:18:50","guid":{"rendered":"https:\/\/a3aengenharia.com\/?post_type=articles&p=75287"},"modified":"2026-09-12T15:18:50","modified_gmt":"2026-09-12T18:18:50","slug":"what-is-the-world-wide-web-2","status":"publish","type":"articles","link":"https:\/\/a3aengenharia.com\/en-us\/content\/technical-articles\/what-is-the-world-wide-web-2\/","title":{"rendered":"What Is the World Wide Web?"},"content":{"rendered":"\n

The World Wide Web<\/strong>, also known as the Web<\/strong>, “WWW<\/strong>” or “W3<\/strong>“, is a global information system that has been fundamental to democratizing access to knowledge.<\/p>\n\n\n\n

In this article, we explore the architecture of the World Wide Web and its main components, examining its layered structure.<\/p>\n\n\n\n

Read on!<\/p>\n\n\n

[elementor-template id=”24446″]<\/p>\n\n\n\n

What Is the World Wide Web?<\/h2>\n\n\n\n

Contrary to what many people think, the Web and the Internet are not synonymous<\/strong>.<\/p>\n\n\n\n

The Web is one of the many services provided over the Internet, alongside e-mail, videoconferencing applications, and online games.<\/p>\n\n\n\n

Developed in 1989 by Tim Berners-Lee, the World Wide Web<\/strong> is a distributed information system based on hypermedia<\/strong> that organizes and distributes electronic documents using the Internet infrastructure.<\/p>\n\n\n\n

How Does the World Wide Web Work?<\/h2>\n\n\n\n

Through the concept of hypermedia, the Web allows users to navigate among different resources, forming a network of interconnected “files” that can be accessed from virtually anywhere in the world.<\/p>\n\n\n\n

The Concept of Hypermedia<\/h3>\n\n\n\n

Hypermedia is an information organization system that enables the construction of interconnected documents through embedded references.<\/p>\n\n\n\n

Unlike a linear reading structure, as in a book or conventional document, hypertext allows users to navigate among different documents and sections non-sequentially, creating an exploratory experience based on associations among content and concepts.<\/p>\n\n\n\n\n\n

When a user clicks a link, the browser interprets the reference and directs the user to the corresponding document or resource.<\/p>\n\n\n\n

This navigation structure is what forms the interconnected “web” of information that defines the World Wide Web, enabling dynamic and decentralized access to distributed data.<\/p>\n\n\n\n

Client-Server Architecture<\/h3>\n\n\n\n

The Web operates on a client-server architecture model, in which browsers (clients) send requests and Web servers process those requests, returning the corresponding documents or data.<\/p>\n\n\n\n

Browsers<\/h4>\n\n\n\n

Browsers act as the interaction interface between users and Web resources.<\/p>\n\n\n\n

When accessing a website, the browser performs a series of operations to retrieve and display the content in a form that is understandable and interactive for the user.<\/p>\n\n\n\n

This process involves interpreting various instructions and commands embedded in the content, which define how each element is displayed, how items are positioned on the screen, and which interactions are available to the user.<\/p>\n\n\n\n

Web Servers<\/h4>\n\n\n\n

Web servers store and distribute the resources requested by browsers.<\/p>\n\n\n\n

They process requests and provide the required data, which may include pages, images, videos, and dynamic data generated by Web applications.<\/p>\n\n\n\n

Transfer Protocols<\/h3>\n\n\n\n

Hypertext Transfer Protocol (HTTP) is the basis of communication on the Web, structuring data exchange between clients and servers.<\/p>\n\n\n\n

Each request and response follows a specific format, including headers, request methods, and response codes that indicate the status of the operation.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Resource Identification<\/h3>\n\n\n\n

Each document or resource on the Web is identified by a URL (Uniform Resource Locator), which specifies the address of a resource and allows the browser to locate it.<\/p>\n\n\n\n

The structure of a URL includes the protocol, domain, and resource path, which are essential to content organization and navigation.<\/p>\n\n\n\n

Domain Name System (DNS)<\/h3>\n\n\n\n

The Domain Name System<\/a> is responsible for translating domain names into IP addresses that identify servers on the network.<\/p>\n\n\n\n

When a user enters a Web address, DNS resolves the domain name to the corresponding IP address, allowing the browser to locate and access the correct server.<\/p>\n\n\n\n

Layered Structure<\/h3>\n\n\n\n

The Internet contains millions of Web pages, databases, and servers that operate 24 hours a day. However, the so-called “visible” Internet (also called the Surface Web or Open Web), consisting of sites found through search engines such as Google and Yahoo, is only the tip of the iceberg.<\/p>\n\n\n\n

\"An
Although the Web is not actually divided this way because it is a single interconnected system, this image is a useful way to visualize how different layers of Web content are commonly described.<\/figcaption><\/figure>\n\n\n\n

Surface Web<\/h4>\n\n\n\n

The Surface Web, or Open Web<\/strong> is the “visible” layer.<\/p>\n\n\n\n

From a statistical perspective, this set of sites and data accounts for less than 5% of the Internet as a whole.<\/p>\n\n\n\n

Surface Web sites can be found because search engines can index pages through visible links, a process known as \u201ccrawling\u201d because of the way search engines traverse the Web like a spider.<\/p>\n\n\n\n

Deep Web<\/h4>\n\n\n\n

The Deep Web <\/b>refers to the part of the Web that is not indexed by conventional search engines.<\/p>\n\n\n\n

To access sites on the Deep Web, users generally need to know the specific page address because those pages do not appear in ordinary search results.<\/p>\n\n\n\n

A common example is the login page of a website administration panel, used for maintenance and adding new content. Although access to such a page is restricted by login credentials, allowing it to be indexed can potentially make automated password-guessing attempts easier by exposing the location of the login interface.<\/p>\n\n\n\n

For this reason, it is generally preferable for such login pages to remain relevant only to authorized site staff and to stay outside the reach of search-engine crawlers.<\/p>\n\n\n\n

A website may also remain outside search indexes if search engines, according to their own criteria, decide not to index its content.<\/p>\n\n\n\n

Dark Web<\/h4>\n\n\n\n

The Dark Web<\/b> is a portion of the Deep Web where content requires a different access mechanism from standard Web browsing.<\/p>\n\n\n\n

This includes content protected by layers of anonymity and security designed to reduce the ability to identify who is accessing it and where the information is hosted.<\/p>\n\n\n\n

The Dark Web uses dedicated anonymity and encryption systems and requires specialized software for access, such as Tor.<\/p>\n\n\n\n

Evolution of the Web<\/h2>\n\n\n\n

The history of the Web can be divided into distinct evolutionary phases that reflect technological advances, changes in interaction paradigms, and growing user participation in creating and consuming content.<\/p>\n\n\n\n

Web 1.0<\/h3>\n\n\n\n

Web 1.0 represents the first stage in the evolution of the Web and is often referred to as the “static Web”.<\/p>\n\n\n\n

It was characterized by the predominance of static pages and mainly informational content created and maintained by a limited number of developers. At this stage, user interactions were minimal and largely limited to browsing and reading information.<\/p>\n\n\n\n

The communication architecture was one-way: from server to client.<\/p>\n\n\n\n

Elements such as hyperlinks and simple HTML pages dominated, while concepts of interactivity were almost nonexistent. This phase established the structural foundations for navigation protocols and the client-server model that would support later developments.<\/p>\n\n\n\n

Web 2.0<\/h3>\n\n\n\n

Web 2.0 marks a significant change in how users interact with the Web.<\/p>\n\n\n\n

Emerging in the mid-2000s, Web 2.0 introduced a more participatory and collaborative dynamic.<\/p>\n\n\n\n

Interactive applications and social platforms such as blogs and wikis emerged, allowing users not only to consume content but also to create and share it.<\/p>\n\n\n\n

This evolution was supported by technologies such as AJAX, which enabled asynchronous updates and a smoother, more responsive user experience.<\/p>\n\n\n\n

The Web architecture became bidirectional, with servers and clients exchanging information in real time.<\/p>\n\n\n\n

This phase also saw the emergence of business models based on user data and targeted advertising, expanding the Web beyond a simple repository of information.<\/p>\n\n\n\n

Web 3.0<\/h3>\n\n\n\n

Web 3.0, also known as the “Semantic Web”, represents an advance in the Web’s ability to understand and process information in ways that are more meaningful to machines and users.<\/p>\n\n\n\n

Its goal is to make Web data more accessible and interconnected through technologies such as artificial intelligence, machine learning, and natural language processing.<\/p>\n\n\n\n

Web 3.0 aims to improve search accuracy and result relevance by interpreting the context and meaning behind queries.<\/p>\n\n\n\n

Another frequently discussed aspect of this phase is decentralization, often associated with blockchain technologies intended to reduce dependence on large centralized entities.<\/p>\n\n\n\n

Final Considerations<\/h2>\n\n\n\n

Conclusion<\/h2>\n","protected":false},"excerpt":{"rendered":"

The World Wide Web, also known as the Web, WWW, or W3, is a global information system that has been fundamental to democratizing access to knowledge. This article explores the architecture of the World Wide Web, its main components, and its layered structure.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"template":"","meta":{"_a3a_global_related_solutions":[],"_a3a_global_related_services":[],"_a3a_global_related_materials":[],"_a3a_post_lang":"en-us","_a3a_translation_group_id":"745b8625-8e14-44db-8352-00c4088f18c2","_a3a_i18n_canonical_slug":"what-is-the-world-wide-web-2","_a3a_lang_url_en-us":"","_a3a_lang_url_es-es":""},"categories":[],"segments":[],"mercados":[],"etapas":[],"class_list":["post-75287","articles","type-articles","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/articles\/75287","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/articles"}],"about":[{"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/types\/articles"}],"author":[{"embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":1,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/articles\/75287\/revisions"}],"predecessor-version":[{"id":75289,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/articles\/75287\/revisions\/75289"}],"wp:attachment":[{"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/media?parent=75287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/categories?post=75287"},{"taxonomy":"segments","embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/segments?post=75287"},{"taxonomy":"mercados","embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/mercados?post=75287"},{"taxonomy":"etapas","embeddable":true,"href":"https:\/\/a3aengenharia.com\/en-us\/wp-json\/wp\/v2\/etapas?post=75287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}