Web 2.0 refers to more dynamic and user-interactive websites and online services where users help create and organize information. Web 2.0 can be applied to business models through social networking sites, user-generated content, and information aggregators. For businesses, Web 2.0 intranets allow faster response to changes and more user participation compared to traditional intranets, though they present challenges around trust, authentication, and lack of managerial control. Web 2.0 has the potential to transform organizational culture by treating knowledge as constructed through social interactions rather than tightly controlled by management.