Push topics are message subjects that are used for sending push notifications to users united by a common topic.
Push notification recipients are selected by two methods:
Sending a notification to a specific user.
Sending a notification to a group of users subscribed to a topic.
To manage push topics, use the Topics subsection:
The working area displays the list of topics with description and number of subscribers.
See also:
Setting Up Push Notifications | Adding Push Notification Templates