Change Calendar, a capability of AWS Systems Manager, now helps customers view their operational events, such as maintenance windows, state manager associations, and planned automation executions alongside their business-critical events. Using Change Calendar, you can schedule calendar events to control the changes made to your AWS resources during events, such as public marketing promotions and when you expect high demand on your resources. To help you get a comprehensive view of operational changes, Change Calendar integrates with other Systems Manager capabilities, such as Automation, Maintenance Windows, State Manager, and Change Manager, and pre-populates your Change Calendar with the operational events view. This new feature automatically displays operational events alongside your business-critical events to help customers become aware of restricted periods while scheduling new tasks.
Source:: Amazon AWS