Taobao app uses a design based on the MVC (Model-View-Controller) architecture, in which the Model layer is responsible for data processing and storage, the View layer is responsible for interface display and user interaction, and the Controller layer is responsible for business logic processing and scheduling. Under this architecture, data, interface, and business logic are separated, making the code structure clear and easy to maintain and expand.

At the same time, Taobao app also uses some new technologies and frameworks, such as React Native and Flutter, to improve user experience and performance. Overall, the architecture design of Taobao app fully considers performance, stability, and user experience, providing users with a smooth and convenient shopping experience.