Azure Monitoring Tools - Exam Cram Sheet

This guide covers the essential monitoring services within Microsoft Azure required for the AZ-900 exam. It focuses on the distinction between Azure Advisor, Azure Service Health, and Azure Monitor.

## Topic Weighting

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## Key Concepts Summary

1. Azure Advisor

Azure Advisor is a personalized cloud consultant. It analyzes your resource configuration and usage telemetry to provide recommendations based on best practices.

• Focus Areas: Cost, Security, Reliability (High Availability), Performance, and Operational Excellence.
• Actionable: Provides specific steps to fix issues (e.g., "Resize underutilized Virtual Machines to save money").

2. Azure Service Health

Provides a personalized view of the health of the Azure infrastructure and services in the regions where you have resources.

• Azure Status: Global view of every service in every region.
• Service Health: Specific to the services/regions you actually use.
• Resource Health: Tells you why a specific resource is down (e.g., "VM unavailable due to host failure").

3. Azure Monitor

A comprehensive solution for collecting, analyzing, and acting on telemetry from your own cloud and on-premises environments.

• Metrics: Numerical values representing a system's state at a point in time (e.g., % CPU usage).
• Logs: Record of events/data organized into records (queried via Log Analytics).
• Application Insights: Monitors the performance and usage of your live web applications.
• Alerts: Proactive notifications when conditions are met (e.g., Send email if CPU > 80%).

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## Visual Anchors

The Azure Monitor Ecosystem

Monitoring Layers (TikZ)

\begin{tikzpicture}[node distance=1.5cm] \draw[thick, fill=blue!10] (0,0) circle (3cm); \draw[thick, fill=blue!20] (0,0) circle (2cm); \draw[thick, fill=blue!30] (0,0) circle (1cm); \node at (0,2.5) {\textbf{Azure Service Health (Global/Regional)}}; \node at (0,1.5) {\textbf{Azure Monitor (Your Resources)}}; \node at (0,0) {\textbf{App Insights (Code)}}; \end{tikzpicture}

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## Common Pitfalls

• Monitor vs. Service Health: If the question asks about a data center outage or Microsoft's maintenance, it is Service Health. If it asks about your application's performance or your VM's CPU usage, it is Azure Monitor.
• Advisor vs. Policy: Advisor gives recommendations (optional). Azure Policy enforces rules (mandatory/compliance).
• Metrics vs. Logs: Metrics are lightweight and good for near real-time alerting. Logs are for complex analysis across multiple data types.

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## Mnemonics / Memory Triggers

• Advisor (C-S-P-R-O): Think of a "C-S-PRO" (Consultant Professional) advising you on:
  • Cost
  • Security
  • Performance
  • Reliability
  • Operational Excellence
• Service Health = "Microsoft's Fault": When the platform is broken, check Service Health.
• Azure Monitor = "My Fault": When your code or config is the bottleneck, check Monitor.

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## Formula / Equation Sheet

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## Practice Set

1. You want to receive a notification if a specific region has a planned maintenance event that affects your resources. Which tool should you use?

[!NOTE] Answer: Azure Service Health. It provides personalized alerts for planned maintenance specific to your subscription.

2. Which service uses Kusto Query Language (KQL) to analyze resource behavior over time?

[!NOTE] Answer: Log Analytics (a feature of Azure Monitor).

3. You need to identify which virtual machines have been underutilized for the last 14 days to reduce costs. Which tool is best?

[!NOTE] Answer: Azure Advisor. Specifically, the "Cost" category of recommendations.

4. True or False: Azure Monitor can only collect data from resources running inside Azure.

[!NOTE] Answer: False. Azure Monitor can collect data from on-premises environments and other clouds using agents.

5. Which component of Azure Monitor specifically focuses on monitoring web application performance and exceptions?

[!NOTE] Answer: Application Insights.**