A brand is a "Name, term, design, symbol, or any other feature that identifies one seller's good or service as distinct from those of other sellers." Branding began as a way to tell one person's cattle from another by means of a hot iron stamp.
Proper branding can result in higher sales of not only one product, but on other products associated with that brand. For example, if a customer loves Pillsbury biscuits and trust the brand, he or she is more likely to try other products offered by the company such as chocolate chip cookies.
Questions having the branding tag regards the User Experience of branding.