What is MKR DAO?

Could you please elaborate on the concept of MKR DAO? I'm curious to know what its primary functions are and how it operates within the cryptocurrency ecosystem. Could you also explain the role of MakerDAO in relation to MKR tokens and the stability of Dai, the decentralized stablecoin? I'm interested in understanding the governance structure of MKR DAO and how decisions are made within this decentralized organization. Finally, could you provide some insights into the potential benefits and risks associated with participating in MKR DAO? Thank you for your assistance.