Comment by ChrisMarshallNY

I wrote an SDK, in 1994-95, that was still in use, when I left the company, in 2017.

It was a device control interface layer, and was written in vanilla ANSI C. Back when I wrote it, there wasn't a common linker, so the only way to have a binary interface, was to use simple C.

I have written stuff in PHP (5), that still works great, in PHP 8.2. Some of that stuff is actually fairly ambitious.

But it's boring, and has a low buzzword index.