What is a stylistic technique?

Why would an author use different stylistic techniques?
!!!SHORT ANSWERS!!!

A stylistic technique is a specific method or approach used by an author to achieve a desired effect in their writing.

An author would use different stylistic techniques to add depth, interest, and variety to their writing. It helps to engage readers, create a certain mood or atmosphere, emphasize certain ideas or themes, or convey different perspectives or points of view.