Vue’s provide/inject enables dependency injection across component hierarchies, allowing ancestor components to serve as dependency providers for descendant components. As the creator of CoreUI, a widely used open-source UI library, I’ve used provide/inject in countless Vue applications to avoid prop drilling and create cleaner component architectures. From my expertise, the most effective approach is providing services and configuration at the root level and injecting them where needed. This method eliminates prop drilling while maintaining clear dependency relationships across component trees.