The document discusses the evolution and uses of Web 2.0. It began in 2003 with the rise of applications that allowed users to share information online, like blogs and social networks. This marked a shift from passive users to a more active role where anyone could create their own content and share it. Web 2.0 provides many utilities beyond just sharing information, including enabling online stores, communicating with customers, and international expansion for businesses. It also allows for instant information sharing in media and collaboration through tools like Trello. Major Web 2.0 platforms include blogs, which started on Blogger but shifted to WordPress, as well as social networks like Facebook, Twitter, YouTube and Instagram that have given rise to jobs like community managers.