What is Character Development?

What is Character Development?:

writeworld:

WHAT IS A CHARACTER-DRIVEN NOVEL ANYWAY?

I don’t write character-driven novels. Heck, I’m not even sure what the term means. I used to think it was when an author spent hundreds of pages muddling around inside a character’s head just to fill the gaps between a couple paragraphs of action.

I prefer to write plot-driven suspense thrillers. But how does the low-brow thriller writer create good characters? I’m still a novice on the subject so this is by...