Microsoft Infrastructure Engineer Mock Interview

Tell me about a time you had to design or improve an infrastructure system for reliability and scale—what were the biggest risks, how did you measure success, and what did you do when production behavior didn’t match expectations?

Microsoft runs large-scale cloud services; describe how you would approach debugging a sudden regional incident in Azure where latency spikes and error rates increase—what telemetry would you check first, how would you narrow the blast radius, and how would you communicate status to stakeholders?

We use SRE-style thinking and strong operational discipline—can you walk through how you would define SLOs/SLIs for a critical service you support and then choose alert thresholds that reduce both noise and missed incidents?

Scenario: you’re migrating a workload from on-premises to Azure and discover hidden dependencies (DNS, identity, storage semantics, network paths) that only appear under load—how would you structure the migration plan, validate readiness, and roll back safely if needed?

Microsoft is big on security and compliance—give an example of how you implemented least-privilege access and secure networking (e.g., RBAC, managed identities, private endpoints, key management) while still meeting performance and availability requirements.