Firebase Push Notifications is a cloud-based messaging service that allows developers to send real-time notifications to mobile and web applications. It is part of Google's Firebase platform and supports personalized and targeted messaging. With minimal integration, developers can notify users about updates, reminders, or promotions, enhancing user engagement. Firebase Push Notifications are highly scalable and work seamlessly across Android, iOS, and web platforms. Its ease of use and detailed analytics make it a popular choice for notification delivery.