Dat is a piece of software that helps make it easier for people to share and find large amounts of information. It works by using a "datapod"—which is like a tiny computer with lots of storage and a connection to the Internet. When you put files into a datapod, it creates a "dat" which is like an address for those files. You can then share the dat with other people over the internet, so they can find and download the files quickly. It's like a faster way to share files, and perfect when you have lots of data to share, like a big music collection or a lot of pictures.