@STC CloudBT - Karen Tan , thank you for the question.
- Azure status informs you of service outages in Azure on the Azure Status page.
- Service health provides a personalized view of the health of the Azure services and regions you're using. This is the best place to look for service impacting communications about outages, planned maintenance activities, and other health advisories because the authenticated Service Health experience knows which services and resources you currently use.
- Resource health provides information about the health of your individual cloud resources such as a specific virtual machine instance. Using Azure Monitor, you can also configure alerts to notify you of availability changes to your cloud resources.
You can set alerts for these services to be notified of any changes or upcoming maintenances requirement. See the following link for more details - Create activity log alerts on service notifications using the Azure portal
Hope this helps.
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