Where should the Style Guide module be placed within the module layers in OutSystems Architecture?

The Style Guide module is best placed in the Foundation Layer of an OutSystems architecture. This layer serves as a base for the application, housing common functionalities and standards that can be reused across different modules. Since the Style Guide defines the visual and user interface standards for applications, placing it in the Foundation Layer promotes consistency and allows for better maintainability across the entire application architecture.

When the Style Guide is in the Foundation Layer, it can be easily referenced by both the Core Layer, which contains the business logic, and the End-User Layer, which focuses on the user experience. This ensures that all UI elements adhere to a unified look and feel, thereby enhancing the overall user experience and simplifying the process of making visual updates when necessary.