Brand equity refers to the intangible value associated with a brand name and the loyalty and perception it holds. It is influenced by factors like goodwill, quality, and price. Brands are valuable assets that can increase a company's financial value. There are three ways to measure brand equity: financially by price premiums, through brand extensions, and based on consumer attitudes and experiences. Building brand equity requires introducing the product with quality, making the brand memorable, and maintaining a consistent image over time through marketing mix elements like quality, price, and distribution.