what is push notifications

Push notifications are messages that apps send to users’ devices to inform them of important information, even when the app is not open. They can appear on the lock screen, in the notification center, or on the home screen.

Push notifications can be used for a variety of purposes, including:
Marketing: Apps can use push notifications to promote deals, events, or other information

Communication: Apps can use push notifications to communicate with users

Security: Apps can use push notifications for security checks and two-factor authentication

Identity authentication: Apps can use push notifications for identity authentication

Push notifications can be sent to mobile devices, desktops, wearables, and voice devices. The app publisher sends the push notification, not the user, and the user can enable or disable push notifications for the app.

There are two main types of push notifications: transactional and promotional. Transactional push notifications can include:
Welcome messages
Order confirmations
Event registration confirmations
Delivery updates
Password resets
Security checks
Abandoned cart notifications
Reminders
Geo-location notifications