Packaging design is the art of presenting your product, beautifully wrapped, in a container with the colours of your brand: a box, a shopping bag, a pouch, an envelope or more.
The primary objective of packaging design is to create a vehicle that serves to contain, protect, transport, dispense, store, identify, and distinguish a product in the marketplace¹.
It extends to food, cosmetics products, fashion items (clothes, shoes, accessories, etc.) and is an application of your visual identity.
Indeed, your package is a tangible “branded” object that your clients can see and touch.
¹ Definition by O’Reilly