Airtable is a cloud-based database and project management tool that allows users to organize and collaborate on information in a highly customizable way. It works by creating "bases" with multiple tables, where each table can have its own set of fields and data types. Users can create links between tables to establish complex relationships between pieces of information. In addition, Airtable includes project management features like task lists and calendars to help teams collaborate on projects and workflows within the same platform.