What feature of OutSystems can enhance user interface design?

The drag-and-drop visual editor in OutSystems is a key feature that significantly enhances user interface design by allowing developers to easily create and modify UI components without needing extensive coding knowledge. This visual approach streamlines the design process, enabling rapid prototyping and real-time feedback as developers can see the changes they make instantly. By simply dragging elements onto a canvas, developers can arrange layouts, set properties, and maintain consistency in design, which improves the overall user experience.

The other options, while useful in their own right, do not directly enhance UI design in the same straightforward and user-friendly manner that the drag-and-drop visual editor does. Custom scripting can allow for more complex interactions or functionalities but also requires deeper programming skills and can complicate the design process. Third-party development tools may provide additional functionalities, but they often rely on integration efforts and may not directly improve the ease of UI design. Cloud service integration focuses on backend connectivity rather than front-end design elements.