The term "usp" is often understood as an abbreviation for "Unique Selling Proposition." It refers to the unique factor or characteristic that makes a product or service stand out from its competitors. This could be anything from superior quality, distinctive features, exceptional customer service, or even a compelling brand story that appeals to consumers.
The term "Unique Selling Proposition" was popularized in marketing literature during the 1940s and 1950s, particularly by advertising executive Rosser Reeves. The word "proposition" comes from the Latin "propositio," meaning "to put forth."