What is the term for launching new variations within the same product category—such as different flavors, formats, colors, added ingredients, or package sizes—under an existing successful brand name?

Explanation

Line extension refers to introducing new items in the same product category under an established brand name, like new flavors or package sizes. Brand extension involves using the brand name to enter different product categories. Multibranding is the strategy of marketing multiple brands within the same category. Creating new brands means launching entirely new brand identities.