This document discusses the concept of brand loyalty. It provides definitions of brand loyalty from various sources that describe it as the consistent repurchase of the same brand over time due to positive attitudes and commitment toward the brand. The document also discusses factors that influence loyalty like perceived value, satisfaction, trust and usage patterns. It notes that loyalty provides benefits for companies like lower sensitivity to price increases. The summary concludes that brand loyalty is a multidimensional concept involving emotional, cognitive and behavioral dimensions.