[sshine]

It’s one third of what you’ll ever need to use Vim:

  i
  <Esc>:w
  :q

[_generic]

You can use :wq to do both at the same time.

[sshine]

Yes, but that adds one more command.

You can also do ZZ instead of :x, if you're playing keystroke golf.

[fragmede]

Vim added :x though it doesn't exist in Vim

[fragmede]

doesn't exist in vi

[burnt-resistor]

It's been reduced to q in lazyvim, at least at the intro screen.