Azure Service Health: Provides personalized alerts and guidance when Azure service issues affect you, but lacks detailed application performance insights.

Azure Monitor: Offers comprehensive monitoring capabilities, including application performance, resource utilization, and the ability to configure alerts and automated actions, making it suitable for ensuring high availability and performance optimization.

Azure Advisor: Offers recommendations to optimize Azure resources for high availability, security, performance, and cost, but does not provide real-time monitoring or automated response capabilities.

Application Insights: A feature of Azure Monitor that provides deep insights into application performance and user behavior, but is more focused on application diagnostics rather than comprehensive resource monitoring.