What is the Raspberry Pi Compute Module used for?

Question

Python

The connection is carried out, as far as I understand, through the RAM slot.
What is it for and how can it be used?

Answer 1

The article says https://geektimes.ru/post/284706/
> Among the first Compute Module 3 was used in its products by NEC, which used it in new generation widescreen displays. Such displays with a diagonal of up to 96" are intended for use in public places: schools, offices, shops, train stations, etc.