Web 2.0

Web 2.0 refers to the second major phase in the evolution of the internet, generally understood to have emerged in the early-to-mid 2000s, marking a shift away from the largely static, read-only nature of Web 1.0 toward a more dynamic, interactive, and participatory internet. The defining characteristic of Web 2.0 is user-generated content, meaning ordinary internet users, not just website owners or professional publishers, gained the ability to create, share, comment on, and modify content directly through their web browsers.

This shift was driven by significant technical advances that allowed web pages to update dynamically without requiring a full page reload, enabling the rich, app-like experiences that platforms like social media networks, blogs, wikis, and video-sharing sites are built upon. Companies like Facebook, YouTube, Wikipedia, and Twitter became emblematic of this era, transforming the internet from a collection of static digital documents into an interconnected web of social interaction, collaboration, and constant content creation by billions of everyday users.

A key economic feature of Web 2.0 is that while users generate the vast majority of the content and value on these platforms, a small number of large technology companies typically own and control the underlying infrastructure, and consequently capture most of the resulting economic value, primarily through targeted advertising built on extensive data collection about user behavior. Users generally do not own their data, their accounts, or the digital content they create on these platforms, and platforms can restrict, monetize, or remove access to that content largely at their own discretion.

This centralization of power and data ownership within a relatively small number of dominant platforms is one of the primary criticisms of the Web 2.0 model, and it is precisely the problem that Web 3.0 technologies, built on blockchain infrastructure, aim to address. Web 3.0 proponents argue that by using decentralized networks, cryptographic ownership, and blockchain-based digital identity, users can regain direct control and true ownership over their own data, digital assets, and online interactions, without depending on a centralized corporation to manage and monetize that relationship on their behalf.

Despite the criticisms leveled against it, Web 2.0 remains the dominant model underlying most of the internet that people use every day, and understanding its strengths, such as ease of use and rich interactivity, as well as its structural weaknesses around data ownership and centralization, provides essential context for understanding both why Web 3.0 emerged and what specific problems it is attempting to solve.