MSDEVBUILD / azure

Microsoft Cost Management

Cloud server ONOFF METER 💰 paying for use ⏸ switched off: no compute bill Monthly budget 80% alert 🔔
Watch spending grow toward the budget line. An alert rings before you overspend.

😟 THE PROBLEM

A GPU VM ran for a month unnoticed until the invoice arrived.

😊 THE SOLUTION

Use Cost Management budgets, alerts and cost analysis.

  • Surprise invoices✓ Budget alerts at 50%, 80%, 100%
  • No idea what costs most✓ Cost analysis by resource and tag
  • Missed savings✓ Advisor recommendations
🛠️ Solved with: Microsoft Cost Management
Try it yourself in the Azure simulator No Azure account needed. Launch a VM and save money 🖥️ Try it ❯
Module 3: Management & Governance ⏱ 6 min read Updated 11 Nov 2026

Quick answer

Microsoft Cost Management helps you track, analyse and control Azure spending after you deploy. Use cost analysis to see where money goes, budgets to set spending limits, alerts to be warned before you overspend, and recommendations to find savings. It is built into the Azure portal.

Exam objective: 3.1.3 Describe cost management capabilities in Azure. (Skills measured as of July 20, 2026)

Start with a question

It’s the 20th of the month. Do you know if you’re about to blow your Azure budget?

With Cost Management, you’d have had an alert at 80%, and you’d know exactly which resource caused it.

Explain it like I’m 10

The technical explanation

CapabilityWhat it does
Cost analysisExplore spend by service, resource group, tag, location and time
BudgetsSpending thresholds on subscriptions, resource groups or management groups
AlertsBudget, credit, department quota and anomaly alerts
RecommendationsRight-sizing, reservations and shutting down idle resources (from Azure Advisor)
ExportsScheduled cost data exports for reporting

Real-world business scenario

Enterprise

A marketing agency

The problem
A developer left a GPU VM running for a month, discovered only when the invoice arrived.
What they used
Budgets per team with alerts at 50%, 80% and 100%, plus tag-based cost views.
Why that choice
Early warnings and clear ownership.
The result
Spending surprises stopped; the next runaway VM was caught within a day.

When to use it and when not to

✓ Use it when…

  • Every subscription should have budgets and alerts.

✕ Think twice when…

  • Relying on the monthly invoice to discover problems.
Ready for more?The full lesson adds the technical explanation, when to use it, interview questions and revision notes.

Interview preparation

Say your answer out loud first, then open the model answer. Interviewers care more about your reasoning than the exact words.

Beginner What is Microsoft Cost Management used for?

Model answer

To see how much I'm spending on Azure, what's costing the most, and to set budgets with alerts so I'm warned before going over.

Intermediate What types of cost alerts are there?

Model answer

Budget alerts when spending reaches a threshold of a budget, credit alerts when monetary credits are being used up, and department spending quota alerts for enterprise agreements. Anomaly alerts can flag unusual spikes.

Experienced developer Do budgets stop resources when exceeded?

Model answer

Not by themselves. Budgets alert. To act automatically, connect budget alerts to action groups that trigger Logic Apps, Functions or Automation runbooks, for example to shut down dev VMs. Plan carefully so production is not stopped by accident.

Test yourself with exercises

3 original practice questions in the AZ-900 style. Pick your answers, then check them. You will see why each option is right or wrong. Score 75% or more and this topic is marked complete.

Question 1

Question 1 of 3

You want to be notified when a subscription's spending reaches 80% of a set amount. What should you configure?

Question 2

Question 2 of 3

Do Cost Management budgets automatically stop resources when exceeded?

Question 3

Question 3 of 3

Which Cost Management feature lets you explore spending by service, resource group and tag?

Quick revision

Key points

  • Cost analysis shows where money goes.
  • Budgets and alerts warn before overspending.
  • Recommendations (from Advisor) find savings.
  • Group costs by tags, resource groups or subscriptions.

Important terminology

Cost analysis
Interactive charts of spending by service, resource group, tag, region and time.
Budget
A spending limit with alerts at chosen percentages of actual or forecast cost.
Cost alert
A notification, such as a budget alert, credit alert or department spending quota alert.

Common mistakes

  • Thinking budgets automatically stop spending.

Exam tips

  • "Be notified when spending reaches 80% of a limit" = budget alert in Cost Management.

Five quick revision questions

  1. 1.Which tool tracks actual Azure spending?Show

    Microsoft Cost Management.

  2. 2.What do budgets do?Show

    Set spending limits and trigger alerts at thresholds.

  3. 3.Do budgets stop resources automatically?Show

    No, they alert. Automation can be added with action groups.

  4. 4.How can you split costs by department?Show

    Use tags or separate subscriptions and group cost analysis by them.

  5. 5.Name a type of cost alert.Show

    Budget alert (also credit and department spending quota alerts).

Official references

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