The purpose of a Brand Architecture model is to help a company organize its portfolio of brands, products, and services to support a business strategy. These models help illustrate the hierarchy, linkages, and roles for each brand. Brand architecture is fundamental to marketing decision-making, from setting budgets to designing websites. There are four main models: Branded House, House of Brands, Endorsed Brand, and Sub-Brand. Each model has its own set of advantages and disadvantages. You need to determine the right model based on your own unique situation and strategy. Establishing a coherent brand architecture makes marketing more efficient and effective by providing you with greater focus and clarity for internal stakeholders and customers.