Information and Technology: World Wide Web (WWW)

The World Wide Web (WWW) is an information system where documents and other resources are identified by URLs and accessed via the internet using a web browser.

Type	Description	Key Features
Surface Web	The visible part of the web that is indexed by search engines.	Publicly accessible, searchable via Google, contains general content.
Deep Web	Part of the web not indexed by search engines, including private databases and password-protected sites.	Not illegal, includes academic, medical, or government databases; vast and diverse content.
Dark Web	Encrypted part of the web requiring special browsers like Tor, often associated with illegal activities.	Anonymity, used for both legal and illegal purposes; requires specific tools for access.

Generation	Time Period	Characteristics	Technologies	Focus
Web 1.0	1989 – 2005	Read-only web Static pages Limited user interaction Content delivery-focused	HTML, HTTP, File Servers	Connecting information
Web 2.0	2005 – 2010	Read-write web Dynamic and interactive content User-generated content Social networking and collaboration	AJAX, JavaScript, CSS, HTML5	Connecting people
Web 3.0	2010 – onward	Read-write-execute web Semantic web Intelligent and personalized experiences Data interoperability	Blockchain, AI, Decentralized Protocols, RDF	Connecting knowledge
Web 4.0	Emerging	Intelligent web Integration of IoT Real-time connectivity Advanced virtual reality and AI-driven systems	IoT, AI, Machine Learning, Wireless Communication	Connecting intelligence
Web 5.0	Future Vision	Emotional web Human-like interfaces Technology understanding human emotions Highly personalized experiences	Emotion AI, Neural Interfaces, Advanced Symbolic Systems	Connecting emotions