Azure Monitor Agent (AMA), collects monitoring data from VMs and sends it to Azure Monitor

For non-Azure VMs to be integrated with Sentinel they need to be have the Azure Arc agent installed, which makes them Arc-enabled.

https://docs.microsoft.com/en-us/azure/azure-arc/servers/agent-overview

https://www.infusedinnovations.com/blog/intelligent-cloud/step-by-step-guide-to-deploy-azure-sentinel

https://techcommunity.microsoft.com/t5/azure-sentinel/azure-sentinel-agent-collecting-from-servers-and-workstations-on/ba-p/811760

https://techcommunity.microsoft.com/t5/microsoft-sentinel-blog/azure-sentinel-the-connectors-grand-cef-syslog-direct-agent/ba-p/803891

https://learn.microsoft.com/en-us/azure/sentinel/create-custom-connector