Why monitoring is essential in Azure - Visual Breakdown

Process Flow - Why monitoring is essential

Start: Application runs

↓

Collect Metrics & Logs

↓

Analyze Data

↓

Detect Issues?

No→Continue Monitoring

Yes↓

Alert Team

↓

Fix Issue

↓

Verify Fix

↓

Back to Monitoring

Monitoring collects data from your app, checks for problems, alerts you if needed, and helps fix issues to keep things running smoothly.

Execution Sample

Azure

az monitor metrics list --resource /subscriptions/123/resourceGroups/myRG/providers/Microsoft.Web/sites/myApp
az monitor metrics alert create --name HighCPUAlert --condition "avg Percentage CPU > 80" --resource /subscriptions/123/resourceGroups/myRG/providers/Microsoft.Web/sites/myApp

These commands list available metrics for the app and create an alert if CPU usage goes above 80%.

Process Table

Step	Action	Input/Condition	Result/Output
1	Start monitoring	App is running	Metrics and logs start collecting
2	Collect metrics	CPU usage, memory, requests	Data stored in Azure Monitor
3	Analyze data	Check if CPU > 80%	Condition evaluated
4	Condition true?	CPU = 85%	Yes, trigger alert
5	Send alert	High CPU alert	Team notified via email/SMS
6	Fix issue	Team investigates	CPU usage reduced
7	Verify fix	CPU now 50%	System stable, monitoring continues
8	Condition false?	CPU = 50%	No alert, continue monitoring

💡 Monitoring continues indefinitely to keep system healthy

Status Tracker

Variable	Start	After Step 2	After Step 4	After Step 6	Final
CPU Usage (%)	N/A	85	85	50	50
Alert Status	Off	Off	On	On	Off
Team Notified	No	No	Yes	Yes	Yes

Key Moments - 2 Insights

Why do we need to keep monitoring even after fixing an issue?

Because issues can happen again or new problems can appear, continuous monitoring ensures the system stays healthy as shown in steps 7 and 8.

What happens if the CPU usage never goes above 80%?

No alert is triggered and monitoring continues silently, as shown in step 8 where condition is false.

Visual Quiz - 3 Questions

Look at the execution table, at which step is the alert sent to the team?

A Step 3

B Step 5

C Step 7

D Step 2

💡 Hint

Check the 'Action' column for 'Send alert' in the execution_table rows

According to the variable tracker, what is the CPU usage after the issue is fixed?

A 50%

B 85%

C N/A

D 100%

💡 Hint

Look at 'CPU Usage (%)' value after Step 6 in variable_tracker

If the CPU usage never exceeds 80%, what happens to the alert status?

A It turns On

B It toggles On and Off

C It stays Off

D It sends multiple alerts

💡 Hint

Refer to execution_table step 8 and variable_tracker 'Alert Status' final value

Concept Snapshot

Monitoring means collecting data from your app continuously.
It checks for problems like high CPU or errors.
If a problem is found, it alerts the team.
The team fixes the issue and monitoring verifies the fix.
This cycle repeats to keep apps healthy and fast.

Full Transcript

Monitoring is essential because it helps keep applications running smoothly. It works by collecting data like CPU usage and logs while the app runs. This data is analyzed to detect problems such as high CPU usage. When a problem is found, monitoring sends alerts to the team so they can fix it quickly. After fixing, monitoring continues to verify the system is stable. This ongoing process prevents downtime and improves user experience.