Notifications are one of the ways the platform communicates about ongoing activity.
Click the Notification icon to open a drop-down containing a list of recent activity around your user profile.
This list will include notifications for multiple actions, e.g., when you receive a post, when your post is published, when someone comments on a post you authored or received, when you earn an achievement, when someone shares a post with you, etc.
Clicking the notification will take you to the associated post or page in the platform.
Click Mark all as read to change the status of the notifications to read.
Click the X next to a notification to remove it from the list.
Click Clear all to remove all notifications.