I was hoping this would be an article about a real Google Graveyard...not for people! but for code. What do large companies like Google do when they kill projec

I was hoping this would be an article about a real Google Graveyard...not for people! but for code. What do large companies like Google do when they kill projects? Surely they don't just rm -rf * the entire machine and repurpose it - do projects like this get archived, and if so, who maintains those archives and why?