Enterprise 2.0 refers to the use of social software platforms and Web 2.0 technologies within companies to enable collaboration, knowledge sharing, and communication. Common tools include wikis, blogs, social networking, social bookmarking, video/podcasting, and instant messaging. These tools allow employees to find information and experts more easily, work together on projects virtually, share new ideas, and communicate more effectively. Successfully implementing Enterprise 2.0 requires aligning tools with business goals, selecting and rolling out technologies strategically, engaging users through change management, and making iterative improvements.