Notion is a versatile productivity tool that combines features for note-taking, task management, project planning, and database creation into a single platform. It allows users to create and organize content in a highly customizable way, making it popular for both personal use and team collaboration. With Notion, you can create pages, databases, to-do lists, calendars, and more, all within a flexible, drag-and-drop interface. Users can also embed various types of content, such as images, videos, and files, and collaborate with others in real time.