Using SCSS (Sass) in Angular applications provides powerful styling capabilities including variables, mixins, nesting, and modular CSS architecture for maintainable stylesheets. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented SCSS extensively in Angular projects for theme systems, component styling, and responsive design patterns in enterprise applications. From my expertise, the most effective approach is to configure SCSS as the default stylesheet format in Angular CLI. This method provides seamless compilation, hot reloading, and access to advanced Sass features without additional build configuration.