Packaging design is the art and science of designing product containers. It includes structural design (how the box folds, where to place windows, die-cuts), material selection (cardboard, plastic, foam), visual design (brand colors, typography, images), and practical considerations (shipping protection, shelf appeal, sustainability). A typical project: A coffee company wants a new premium package. You design a kraft cardboard box with a window showing product. Die-cut a custom shape. Print brand colors. Test durability (drop test from 3 ft). Iterate. Send to printer. Boxes arrive; products are filled; shipped to retail.