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Web 1.0 versus Web 2.0 differences

Short answer

Web 1.0 was read-only static pages with few content creators; Web 2.0 is read-write, interactive, and user-generated. Web 2.0 uses AJAX, APIs, and social media, while Web 1.0 used basic HTML and one-way communication.

What are the difference between Web1.0 and Web2.0?

Web 1.0 (about 1991-2003) was the "read-only" web of static pages where a few publishers created content and most users only read it. Web 2.0 (from about 2004) is the "read-write" or social web where users create, share and collaborate on content.

BasisWeb 1.0Web 2.0
NatureRead-only, staticRead-write, dynamic, interactive
Content creatorsFew webmasters/companiesUsers themselves (user-generated content)
InteractionOne-wayTwo-way, participation and collaboration
TechnologiesHTML, basic CSS, CGIAJAX, JavaScript, XML/JSON, RSS, APIs, HTML5
ExamplesEarly company sites, Britannica Online, early HotmailFacebook, YouTube, Wikipedia, Blogger, Twitter
Organisation of dataDirectories, taxonomiesTagging, folksonomy
Software modelSoftware installed/sold as productWeb as a platform; services (SaaS)
OwnershipContent owned by the publisherShared, open, community-driven
AdvertisingBanner ads, page viewsClick-based and targeted ads
CommunicationEmail, forumsBlogs, wikis, social networks, podcasts

Web 2.0 did not change the underlying protocols but changed how people use the Web: from consumers of information to producers and collaborators.

✓ Answer checked by Claude Opus 5.5 (high effort)

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