How does bittensor tao work?

Could you please explain, in layman's terms, how does the Bittensor Tao actually operate? I'm really interested in understanding its mechanisms but I'm not too technical. Could you break it down for me? I've heard it's a decentralized protocol for machine learning, but how does it specifically achieve this? Is there a certain architecture or framework it follows? Also, how does it ensure data privacy and security? I'm really curious to know more about its inner workings.