Which Azure tool provides proactive recommendations to optimize cost, performance, and availability?

Azure Advisor is the correct answer because it analyzes your Azure resource configuration and usage telemetry to provide personalized, actionable recommendations for optimizing cost, performance, reliability, operational excellence, and security. Azure Monitor collects and analyzes telemetry from your Azure resources but doesn't proactively suggest optimizations. Azure Policy helps enforce organizational standards and assess compliance, rather than providing optimization recommendations. Azure Cost Management helps you understand and control your Azure spending, but Azure Advisor specifically offers proactive suggestions to reduce costs and improve other aspects.