All data collected from resources for Analytics is done via an Agent (or telemetry endpoints for Mobile and Web apps). An Agent does not collect any data until you add a resource. After you install an Agent, you can add a resource to begin collecting data. With ArcGIS Online, the Agent is installed on a server and then configured for access.
The types of resources you can add are as follows:
You should install an agent on any local servers, including ArcGIS and Enterprise Portal servers, that you want to monitor with Analytics. These local agents can also be configured to monitor ArcGIS Online.
You can configure alarms for each resource type. Default alarms can be configured for each resource type, or overridden for an individual instance.