Web 2.0 required interactive features like real-time communication (via AJAX), user-generated content (e.g., blogs, social media posts), and dynamic page updates. Tools like APIs, RSS feeds, and collaborative platforms (e.g., wikis) allowed users to create, share, and engage with content easily. Interactivity through comments, tagging, and likes transformed static websites into participatory ecosystems.

Today, interactions emphasize decentralization, personalization, and immersion. Blockchain enables secure peer-to-peer transactions, AI curates content intelligently, and AR/VR provides immersive experiences. The focus has shifted from user participation to ownership (via NFTs, Web3 wallets) and seamless integration of the physical and digital worlds.