# Glossary for AWS User Notifications
Glossary


| Term | Definition | 
| --- | --- | 
|  AWS managed notifications  |  An *AWS managed notification* is a notification that is generated by default. For example, notifications about payment updates.  | 
|  Event  |  An *event* indicates a change in an environment. AWS User Notifications uses Amazon EventBridge events to generate notifications. For example, an Amazon EC2 instance state changed to failed.  | 
|  Event pattern  |  An *event pattern* has the same structure as the events that they match. Rules use event patterns to select events and notify users. An event pattern either matches an event or it doesn't.  | 
|  Event rule  |  A *rule* matches incoming events and generates a notification. When you create rules for events, User Notifications notifies you when it receives an event that matches the event pattern in the rule.  | 
|  Notification Center  |  A dedicated user interface of the AWS Management Console where users can configure and view notifications.  | 
|  Notification configuration  |  A logical container of event rules.  | 
|  Notification hub  |  An account-level setting that you use to select the Regions where you want to store, process, and replicate your notifications.  | 
|  User-Configured Notification  |  A *user-configured notification* is a notification generated by a user's notification configuration.  |