Brand is best defined as $...$

Something that offers a functional benefit

A distinctive identity that differentiates a relevant, enduring, and credible promise of value associated with a product, service, or company and that indicates the source of that promise.

a succinct statement that answers the question "Why should I buy from you?"

an act or performance one party can offer to another that essentially intangible and does not result in the ownership of anything.

a distinguishing name, sign, symbol, or design $($or some combination of them$)$ that identifies the goods or services of one seller.