What are the areas in IT?

Question

Career in IT

There are areas in IT that are closely related to business: web, mobile development, games (can be supplemented)
But if you think about it, programming does not end with creating products for business.
There are areas that create tools for the web, mobile phones and other things, like are they all arranged?
And who knows what other areas in IT, besides these two?

Answer 1

Everything that sells is a business. Creating web and mobile products for business is also a business. And the creation of tools for them - too.
In addition to business, there is also science, the defense industry, just for fun, but they also monetize well.

Answer 2

What professions are there in it?

Answer 3

All life is IT, but with different levels of "depth" of logical connections in algorithms: there are simple professions where everything fits in the head, and there are those where even AI is indispensable.
Drop the simple ones and get the desired list.