The document discusses two models of brand identity - Aaker's Brand Identity Model and Kapferer's Brand Identity Prism.
Aaker's model views brand identity through four perspectives - as a product, organization, person, and symbol. Kapferer's prism has six elements that make up brand identity - physique, personality, culture, self-image, reflection, and relationship. Both models are explained using Pizza Hut as an example brand. The key aspects of Pizza Hut's brand identity discussed are its menu, customer service, values, and positioning as an affordable and welcoming place for making memories.