This separation between data and code also enabled trivial scaling for huge system, as well as the opposite - hundreds of apps, each belonging to a different customer could share the same system - decades before docker or k8 was born.
This language was written when Objects were the only thing people talked about. In a counter-cultural move, the language's author wrote the entire standard library as only functions. The language could be easily learned - just look at the list of functions for the one that does what you want.
It's cross platform - the user interfaces you build work on all platforms with a single codebase.
Its combination of scaling, quick development iterations, and ease of use powered the rise of fourth largest tech company in the world today. In fact, just a single app written in this language has more than a billion people using it every day.
Darkly, however, the name of this language may not be spoken here. Even by praising it obliquely, I risk censure, and my perceived value of my work being cut by eighty percent in penalty.
I will not name it.