What makes a cake successful?

In the realm of baking, what are the key ingredients and techniques that contribute to a truly successful cake? Does it hinge on the quality of the flour or the precise measurement of sugar? Is it the artful blending of wet and dry ingredients, or the gentle yet precise hand in the mixing bowl? Does the baking time and temperature play a pivotal role, or is it the finishing touches like a dusting of powdered sugar or a decadent layer of frosting? Could it be the creativity and passion of the baker themselves, translating into a unique flavor combination or intricate design? As a seasoned baker, I'm eager to delve into the nuances that transform a mere cake into a culinary masterpiece.