Overlays & Surfaces
Notification
also known as push notification, system notification, in-app notification
A notification is any message that alerts a user to information or an event. It spans two families: system/push notifications delivered by the OS (appearing outside the app, e.g. lock screen), and in-app notifications shown inside the product (toasts, snackbars, banners, notification centers). The term is broad and covers many delivery styles.
See it live — shadcn/ui · MUI · Ant Design
Don't confuse it with
Notification is the umbrella concept. Toasts, snackbars, and banners are specific in-app notification patterns. Push notifications specifically come from the operating system and can appear even when the app is closed.
In the wild
A phone's lock-screen alert 'You have 3 new messages' is a system notification.