UX - the discipline of Humanity, Aesthetics & Technology

What is User Experience (UX)?

Simple and direct question. Simple to answer... but, the answer is... it's cross-functional.

One can think UI/UX as a technological challenge;
-how to make UI work smoothly?
-nice graphics? enough resolution?
-nice logic in functions
-responsive? CPU power?

or...

From graphic design point of view:
-which colors are good? trendy? evergreen?
-what font is suitable?
-how about layout?

or...

What does The User *actually* want to do or accomplish?