The background is the hardest part of a quick design to get right, because a stock gradient never quite matches your colors and a flat fill looks unfinished. So most people end up with a slightly wrong purple and a nagging feeling.
Background Studio generates the background instead, in four families: mesh gradients, organic blobs, geometric patterns and low-poly fields. Each one is procedural, so there is no library to browse and no chance that somebody else is using the same file.
The important part is where the colors come from. You can pick them by hand, but you can also pull them from the open document, from a brand kit or from a saved swatch set. That single option is the difference between a background that decorates and one that belongs, because it is literally made of the colors already in your design.
Every setting has a new variation button next to it, so you can keep rolling until something clicks without losing the settings you liked. And when it does click, save it as a pattern and it is available in every future document.
