Push notifications enable real-time user engagement, important alerts, and re-engagement capabilities even when users aren’t actively browsing your application. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented push notification systems in enterprise React applications throughout my 12 years of frontend development since 2014. The most reliable approach is combining the Push API with service workers for background message handling and managing notification permissions properly. This method provides cross-browser push notification support, handles permission states, and enables rich notification experiences with actions and data payloads.