The platform economy is gaining increasing importance. Digital platforms can be found in more and more areas of consumers daily lives. One area particularly affected by this is online shopping, which is becoming increasingly popular. Large online retailers have achieved monopolistic positions, and the majority of online shopping takes place on their marketplaces. This presents significant challenges for manufacturer brands. Recently, some of them have started operating their own platforms to counteract the risks within the platform economy, the so-called Brand Flagship Platforms. This book not only presents the development of the first empirical measurement scale for assessing the benefit dimensions of these Brand Flagship Platforms but also takes it a step further by analyzing the behavioral impact of these platforms on consumers’ attachment to the respective brands and, ultimately, on their purchasing behavior. This serves both researchers and practitioners in assessing the impact of digital platforms on their own brand.