Earlier quoted context omitted.
It has everthing to do with operating systems. It provide services for security, storage and compute. It also makes a network look like one system to the user
read the shardTree.js file if you want do know how your files is stored
> if I add a gigabyte of photos and then close the lid of my laptop, who is storing those? Do I choose specific nodes I trust, or is it assigned randomly? How much do I need to pay them for this? What if they turn off the server, do I lose all the data?