Bag in Box(BiB) has many common commercial applications. Among the most common ones are to supply syrup to soft drink fountains and to dispense bulk supplied condiments such as ketchup or mustard in the foodservice industry (especially in fast food outlets). As explained further below, BiBs have also been implemented for consumer applications like boxed wine, juice, beverage, etc.

For commercial syrup applications, the customer opens one end of the box (sometimes via a pre-scored opening) and connects a compatible connector to a built-in port on the bag to pump out its contents. The port itself contains a one-way valve that opens only under pressure from the attached connector and which prevents contamination of the syrup in the bag. For consumer applications like boxed wine, there is a tap already present on the bag which protrudes through a pre-cut hole on the box, so all the consumer has to do is locate the tap on the outside of the box.

Producers like BiB packaging because it is inexpensive. BiB also offers environmental benefits by allowing contents of 1.5–1000 liters, so that less packaging or labeling is required. The material is made from is lighter than the other plastic alternatives, providing it with a better carbon footprint.