Okay, you might not be as old as I but surely you remember Blondie!
But heart of glass is what we are talking about today - when talking about all of this data we are creating!
Where does that data go? how is it stored? well, in most cases, the data is stored on hard disks (SSD or otherwise) and for backups/long-term storage it is mostly still down to tape! yes, the 80's cassette tapes are not forgotten! :)
Enter Microsoft Project Silica. Storing data (more like backups, not fast read-write stuff like in your laptop or phone... yet!) in glass.
Take a look at the video here which explains more.
Episode 60 - Heart of Glass