What is AirDAO?

Can you please explain to me what exactly AirDAO is? I've heard about it in the context of decentralized finance and cryptocurrency, but I'm not entirely sure what its purpose is or how it functions. Is it a protocol, a platform, or something else entirely? How does it differ from other decentralized autonomous organizations, and what are its main features and benefits? I'm particularly interested in understanding its governance structure and how decisions are made within the organization.