There are many ways to describe a DAO, and knowledgable people may disagree on the precise definition. For our purposes, you can think of DAOs as flexible, global, and uncensorable online organisations. The limits of what is enabled by DAOs can be as broad as our imagination, but some common actual use cases are: projects with friends or strangers, pop-up companies and basically any kind of community. What you see around in web3, is probably (or at least partly) governed by a DAO.