Cost management

📘Microsoft Certified: Azure Fundamentals (AZ-900)

1. Introduction to Azure Cost Management

When an organization uses Microsoft Azure, it pays for cloud services such as:

Virtual Machines (VMs)
Storage accounts
Databases
Networking
App services
AI and analytics services

Azure follows a pay-as-you-go model, meaning you pay only for what you use. However, if resources are not monitored properly, costs can increase quickly.

To help organizations monitor, control, and optimize spending, Microsoft provides Azure Cost Management + Billing tools.

For the AZ-900 exam, you must understand:

What Azure Cost Management is
What tools are available
What reports you can generate
How to analyze and control costs

2. What is Azure Cost Management?

Azure Cost Management is a built-in service that helps you:

Monitor cloud spending
Analyze costs
Set budgets
Receive alerts
Optimize resource usage
Forecast future costs

It helps organizations answer questions like:

Which department is spending the most?
Which resource is the most expensive?
Why did costs increase this month?
Are we going over budget?

3. Azure Cost Management + Billing

Azure Cost Management is part of Azure Cost Management + Billing in the Azure portal.

It helps you manage:

Subscriptions
Invoices
Payments
Cost analysis
Budgets
Reservations
Usage reports

You access it from the Azure Portal → Cost Management + Billing.

4. Key Cost Management Tools (Very Important for Exam)

4.1 Cost Analysis

This is the most important tool.

What is Cost Analysis?

Cost Analysis is an interactive reporting tool that allows you to:

View current and historical costs
Filter by resource
Filter by subscription
Filter by resource group
Filter by location
Filter by service
Group by different categories

What You Can Do

You can:

See daily, monthly, or yearly spending
Compare costs over time
Identify unexpected cost increases
Break down spending by service

Example (IT Environment)

An organization runs:

5 virtual machines
1 SQL database
3 storage accounts

Using Cost Analysis, they can:

See which VM costs the most
See how much storage costs this month
Identify if a test VM was left running unnecessarily

Key Exam Point

Cost Analysis helps you:
✔ Understand where money is being spent
✔ Analyze usage patterns
✔ Filter and group costs

4.2 Budgets

What is a Budget in Azure?

A budget allows you to:

Set a spending limit
Track actual spending against that limit
Receive alerts when you reach a percentage of the budget

Important:
Budgets do NOT automatically stop services. They only send alerts.

How Budgets Work

You can:

Set a monthly budget (e.g., $1,000)
Get alerts at 50%, 80%, or 100%
Notify specific users or groups

Example (IT Scenario)

A development team has a monthly budget of $500 for test environments.

If they reach:

80% ($400) → Azure sends an alert.
100% → Another alert is triggered.

This helps avoid unexpected billing surprises.

Key Exam Point

✔ Budgets track spending
✔ Budgets trigger alerts
✘ Budgets do NOT automatically shut down resources

4.3 Cost Alerts

Cost alerts notify you when:

Spending exceeds a threshold
Forecasted costs exceed budget
Usage changes unexpectedly

Alerts help IT teams react quickly.

Example:
If storage usage suddenly increases because large files were uploaded, Azure can notify administrators.

4.4 Forecasting

Azure can predict future costs based on:

Current usage
Past usage patterns

This is useful for:

Planning budgets
Financial forecasting
Capacity planning

Example:
If spending is increasing steadily, Azure predicts the end-of-month total.

Key Exam Point

Forecasting helps estimate future spending based on trends.

4.5 Exporting Cost Data

Organizations often need cost data for:

Finance teams
Accounting systems
Reporting tools

Azure allows you to:

Export cost data to a storage account
Download reports as CSV files
Integrate with Power BI

This allows deeper analysis outside Azure.

5. Cost Reports in Azure

Azure provides several important reports.

5.1 Usage Details Report

Shows:

Resource-level usage
Service consumption
Meter usage
Cost per resource

Useful for:

Detailed cost breakdown
Auditing usage

5.2 Invoice Report

Shows:

Total billed amount
Taxes
Discounts
Previous balance

Used by finance departments.

5.3 Reservations Report

If an organization purchases:

Reserved Virtual Machine instances

Azure provides reports to show:

Reservation utilization
Savings achieved

Key concept:
Reserved instances provide discounted pricing for 1-year or 3-year commitments.

5.4 Savings Plans & Recommendations

Azure provides recommendations such as:

Purchase Reserved Instances
Resize underutilized VMs
Delete unused disks
Shut down idle resources

These are shown under:

Cost Management
Azure Advisor (Cost recommendations)

6. Scopes in Cost Management (Important)

Costs can be analyzed at different levels:

Management group
Subscription
Resource group
Resource

This allows organizations to:

Track costs by department
Track costs by project
Track costs by environment (Dev, Test, Production)

Example:
A company has:

Subscription A → Production
Subscription B → Development

Cost Management can show spending separately.

7. Azure Pricing Tools (Also Exam Relevant)

Although slightly separate, these are related to cost planning.

7.1 Azure Pricing Calculator

Used before deployment.

Helps estimate:

VM costs
Storage costs
Bandwidth costs

Used during planning phase.

7.2 Azure Total Cost of Ownership (TCO) Calculator

Used to compare:

On-premises infrastructure costs
vs
Azure cloud costs

Helps in migration decisions.

8. Tags and Cost Management (Very Important)

Tags are labels applied to resources.

Example tags:

Department: HR
Project: WebsiteUpgrade
Environment: Production

Cost Management can group costs by tag.

This helps:

Track departmental spending
Allocate costs internally
Improve financial reporting

Exam tip:
Tags help organize and analyze costs.

9. Best Practices for Managing Costs

For the AZ-900 exam, understand these best practices:

✔ Monitor costs regularly
✔ Use budgets and alerts
✔ Delete unused resources
✔ Resize over-provisioned VMs
✔ Use reserved instances when appropriate
✔ Apply tags consistently
✔ Review cost analysis reports frequently

10. Common AZ-900 Exam Scenarios

You may see questions like:

Which tool helps analyze spending trends? → Cost Analysis
Which feature sends alerts when spending exceeds a limit? → Budgets
Which tool estimates cost before deployment? → Pricing Calculator
Which tool compares on-premises vs Azure costs? → TCO Calculator
Do budgets automatically stop services? → No

11. Summary Table

Feature	Purpose
Cost Analysis	Analyze current and past spending
Budgets	Set spending limits and get alerts
Forecasting	Predict future costs
Exports	Download cost data
Pricing Calculator	Estimate cost before deployment
TCO Calculator	Compare on-prem vs Azure
Tags	Organize and track costs

Final Exam Tips for AZ-900

For this section, remember:

Azure Cost Management helps monitor and control spending.
Cost Analysis is the main reporting tool.
Budgets trigger alerts but do not stop resources.
Forecasting predicts future spending.
Tags improve cost tracking.
Pricing Calculator is for estimation before deployment.
TCO Calculator compares on-premises vs Azure.