Rethinking MVVM Architecture: Clarifying Layer Responsibilities

The MVVM pattern is widely adopted in modern application development. However, in my practical development experience, there is a certain degree of misunderstanding within the team regarding the responsibilities of each layer. This has led to an imbalanced code structure, resulting in extremely bloated ViewModel layers and the degeneration of the Model layer into pure data containers. Based on the core principles of object-oriented design and architectural layering, this article reorganizes and