Alerts and security assessments
Once the rollout and activation are done, and you have configured some security baselines and compliance profiles and assigned them to your desktops, you are ready to review your devices in the Microsoft Defender Security Center console. When you click on devices, you're able to drill down into the different assessments and alerts (if any) being detected.
Security recommendations
Microsoft Defender also recommends activating different features to increase the security level of your desktops in the Security recommendations tab. In there, you can find multiple settings that you can directly enable and push into Intune when you set up the connection correctly to your Intune tenant environment.