An organization is implementing Azure Monitor for comprehensive observability across hybrid infrastructure. How should you structure monitoring to correlate data from on-premises and Azure resources?

Correct answer: Deploy Log Analytics agents on all servers and configure Azure Monitor to collect unified telemetry

Option C is correct because deploying the Log Analytics agent (or Azure Monitor Agent) on all servers, both on-premises and in Azure, sends telemetry into a single Log Analytics workspace. Azure Monitor can then correlate logs, metrics, and traces across the entire hybrid environment using a unified query language (KQL) and shared dashboards. Option A is wrong because manually correlating logs in Excel is error-prone, unscalable, and provides no real-time alerting or automated correlation. Option B is wrong because Application Insights is focused on application performance monitoring for web apps and APIs, not broad infrastructure-level hybrid monitoring. Option D is wrong because running separate monitoring solutions for on-premises and cloud creates data silos, making correlation across environments difficult and defeating the goal of unified observability.