Web2 introduced a revolutionary breakthrough by enabling bidirectional interactions. Users became creators, contributing massive flows of data to centralized servers.
### Core Breakthroughs
* **Media Interaction:** Users write, comment, share, blog, and stream video in real-time.
* **Social Communities:** Platforms like Facebook, YouTube, Instagram, and Twitter became central hubs.
* **Dynamic Data Processing:** Databases processed user actions to personalize experiences dynamically.
However, Web2 introduced a major systemic problem: While users created all the value, centralized corporate intermediaries owned the platforms, infrastructure, and user data.