Good design is to evaluate what you could do better, faster, different and more efficient.
Onur Cobanli explains:
If you need to be successful in business, all you need is good design. Good marketing is part of good design, good production is part of good design. You need good design for your business; not just any aspect of your production, marketing or communication but the whole business must be designed good. That being said, good design sells, but great design is the difference; the unique aspects that make your business original, unique design decisions that give it a competitive edge are the great design elements that you need for your business. With great design, you skyrocket.