I want to explore OMS (especially Service Map) for Azure webApps, but it shows following error, "In order to on-board a server to Service Map, the Microsoft Dependency Agent needs to be installed on a server being monitored by OMS. Documentation can be found".
Alos, Microsoft claims that 'Monitor service' is used to view the data across multiple subscriptions, resource group etc. But when I view Metrics, it requires 'Resource Name'. Although comments says, 'select or all resources', but It does not give option to select all.