Cost optimization pillar in Azure - Mini Project: Build & Apply

Cost Optimization Pillar in Azure Cloud

📖 Scenario: You are working as a cloud engineer for a small company that wants to save money on their Azure cloud resources. Your manager asked you to create a simple setup that tracks resource usage and applies cost-saving configurations.

🎯 Goal: Build a basic Azure resource configuration that includes a list of resources with their costs, a budget threshold, and logic to identify which resources exceed the budget. Finally, add a tag to those resources to mark them for cost review.

📋 What You'll Learn

Create a dictionary of Azure resources with their monthly costs.

Add a budget threshold variable to compare costs.

Write logic to find resources exceeding the budget.

Tag the expensive resources with a 'CostReview' label.

💡 Why This Matters

🌍 Real World

Companies use cost optimization to avoid overspending on cloud resources by tracking usage and tagging expensive resources for review.

💼 Career

Cloud engineers and architects must understand cost management to design efficient, budget-friendly cloud environments.

1

Create Azure resources cost dictionary

Create a dictionary called azure_resources with these exact entries: 'VM1': 120, 'Storage1': 80, 'DB1': 150, 'AppService1': 90

Azure

# Create the azure_resources dictionary with exact costs
# Your code here

Hint

Use curly braces to create a dictionary with resource names as keys and costs as values.

2

Add budget threshold variable

Create a variable called budget_threshold and set it to 100 to represent the maximum allowed monthly cost per resource.

Azure

azure_resources = {'VM1': 120, 'Storage1': 80, 'DB1': 150, 'AppService1': 90}
# Create budget_threshold variable with value 100
# Your code here

Hint

Just assign the number 100 to the variable named budget_threshold.

3

Identify resources exceeding budget

Create a list called expensive_resources that contains the names of resources from azure_resources whose cost is greater than budget_threshold. Use a list comprehension with resource and cost as variables.

Azure

azure_resources = {'VM1': 120, 'Storage1': 80, 'DB1': 150, 'AppService1': 90}
budget_threshold = 100
# Create expensive_resources list with resources costing more than budget_threshold
# Your code here

Hint

Use a list comprehension to filter resources by cost.

4

Tag expensive resources for cost review

Create a dictionary called resource_tags where keys are resource names from azure_resources. For each resource in expensive_resources, set its tag to 'CostReview'. For others, set the tag to 'Normal'.

Azure

azure_resources = {'VM1': 120, 'Storage1': 80, 'DB1': 150, 'AppService1': 90}
budget_threshold = 100
expensive_resources = [resource for resource, cost in azure_resources.items() if cost > budget_threshold]
# Create resource_tags dictionary tagging expensive resources as 'CostReview' and others as 'Normal'
# Your code here

Hint

Use a dictionary comprehension with a conditional expression to assign tags.

Practice

1. What is the main goal of the Cost optimization pillar in Azure cloud?

easy

A. To improve network speed only

B. To save money by using cloud resources wisely

C. To add more storage without limits

D. To increase the number of virtual machines

Solution

1. Step 1: Understand the purpose of cost optimization

   The cost optimization pillar focuses on managing cloud spending efficiently.

2. Step 2: Identify the correct goal

   Saving money by using resources wisely matches the cost optimization goal.

3. Final Answer:

   To save money by using cloud resources wisely -> Option B

4. Quick Check:

   Cost optimization = saving money [OK]

Hint: Cost optimization means saving money smartly [OK]

Common Mistakes:

• Thinking cost optimization means adding more resources
• Confusing cost optimization with performance only
• Assuming cost optimization ignores resource usage

2. Which Azure tool helps you monitor and control your cloud spending?

easy

A. Azure Cost Management

B. Azure DevOps

C. Azure Active Directory

D. Azure Monitor Logs

Solution

1. Step 1: Identify Azure tools related to cost

   Azure Cost Management is designed to track and manage cloud expenses.

2. Step 2: Exclude unrelated tools

   DevOps is for development, Active Directory for identity, Monitor Logs for diagnostics.

3. Final Answer:

   Azure Cost Management -> Option A

4. Quick Check:

   Cost Management = spending control [OK]

Hint: Cost Management tracks spending in Azure [OK]

Common Mistakes:

• Choosing Azure DevOps for cost tracking
• Confusing Azure Monitor Logs with cost tools
• Selecting Azure Active Directory by mistake

3. You have an Azure VM running 24/7 but only need it during business hours (8 AM to 6 PM). What is the best cost optimization action?

medium

A. Keep the VM running all the time

B. Resize the VM to a larger size

C. Schedule the VM to start and stop during business hours

D. Add more storage to the VM

Solution

1. Step 1: Analyze VM usage pattern

   The VM is needed only during business hours, so running it 24/7 wastes money.

2. Step 2: Choose cost-saving action

   Scheduling start/stop saves cost by not running VM when unused.

3. Final Answer:

   Schedule the VM to start and stop during business hours -> Option C

4. Quick Check:

   Stop unused VM times = save cost [OK]

Hint: Stop VMs when not needed to save money [OK]

Common Mistakes:

• Keeping VM always on wastes money
• Resizing larger increases cost
• Adding storage does not reduce cost

4. You see a recommendation from Azure Advisor to "Right-size your VMs" but your VM is already the smallest size. What should you do?

medium

A. Check if VM is underutilized and consider shutting down

B. Ignore the recommendation because VM is smallest

C. Upgrade VM to a larger size

D. Delete the VM immediately

Solution

1. Step 1: Understand "Right-size" recommendation

   It means adjusting VM size to match workload, avoiding waste.

2. Step 2: Since VM is smallest, check if it is needed at all

   If underutilized, shutting down or deleting saves cost.

3. Final Answer:

   Check if VM is underutilized and consider shutting down -> Option A

4. Quick Check:

   Right-size means match usage, not just smallest [OK]

Hint: Right-size means match workload, not just smallest size [OK]

Common Mistakes:

• Ignoring recommendations blindly
• Upgrading VM increases cost unnecessarily
• Deleting VM without checking usage

5. Your company wants to reduce Azure costs by using reserved instances. Which approach best fits cost optimization?

hard

A. Ignore reserved instances and focus on storage only

B. Use pay-as-you-go for all workloads to stay flexible

C. Always use the largest VM size available

D. Purchase reserved instances for steady workloads to get discounts

Solution

1. Step 1: Understand reserved instances

   Reserved instances offer discounts for long-term, steady usage.

2. Step 2: Match reserved instances to steady workloads

   This reduces cost compared to pay-as-you-go for predictable use.

3. Final Answer:

   Purchase reserved instances for steady workloads to get discounts -> Option D

4. Quick Check:

   Reserved instances = save on steady use [OK]

Hint: Reserved instances save money for steady workloads [OK]

Common Mistakes:

• Using pay-as-you-go for steady workloads wastes money
• Choosing largest VM size increases cost
• Ignoring reserved instances misses savings