Billing dashboard overview in AWS - Mini Project: Build & Apply

Billing dashboard overview

📖 Scenario: You work for a small company that wants to track its AWS costs. Your manager asked you to create a simple billing dashboard overview using AWS Cost Explorer data.This dashboard will help the team see monthly costs and identify the top three AWS services by cost.

🎯 Goal: Build a basic AWS billing dashboard overview that fetches monthly cost data and lists the top three AWS services by cost.

📋 What You'll Learn

Create a dictionary with AWS services and their monthly costs

Add a threshold variable to filter services with costs above a certain amount

Use a loop to select the top three services by cost above the threshold

Complete the dashboard configuration with a summary section showing total cost

💡 Why This Matters

🌍 Real World

Companies use billing dashboards to monitor cloud costs and optimize spending.

💼 Career

Cloud engineers and financial analysts often build cost reports and dashboards to manage budgets.

1

Create AWS services cost dictionary

Create a dictionary called service_costs with these exact entries: 'EC2': 120.50, 'S3': 75.30, 'Lambda': 45.00, 'RDS': 90.00, 'CloudFront': 30.25

AWS

# Create the service_costs dictionary with exact entries
# Your code here

Hint

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

2

Add cost threshold variable

Add a variable called cost_threshold and set it to 50 to filter services with costs above this value.

AWS

service_costs = {
    'EC2': 120.50,
    'S3': 75.30,
    'Lambda': 45.00,
    'RDS': 90.00,
    'CloudFront': 30.25
}
# Add cost_threshold variable below
# Your code here

Hint

Just create a variable named cost_threshold and assign the number 50.

3

Select top three services above threshold

Create a list called top_services that contains the names of the top three services from service_costs with costs above cost_threshold. Use a loop with variables service and cost to filter and sort the services by cost in descending order.

AWS

service_costs = {
    'EC2': 120.50,
    'S3': 75.30,
    'Lambda': 45.00,
    'RDS': 90.00,
    'CloudFront': 30.25
}
cost_threshold = 50
# Create top_services list with top three services above cost_threshold
# Your code here

Hint

Use a dictionary comprehension to filter, then sort the items by cost descending, then select the top three service names.

4

Add total cost summary to dashboard

Add a variable called total_cost that sums all values in service_costs. Then create a dictionary called dashboard with keys 'top_services' and 'total_cost' holding the respective values.

AWS

service_costs = {
    'EC2': 120.50,
    'S3': 75.30,
    'Lambda': 45.00,
    'RDS': 90.00,
    'CloudFront': 30.25
}
cost_threshold = 50
filtered_services = {service: cost for service, cost in service_costs.items() if cost > cost_threshold}
sorted_services = sorted(filtered_services.items(), key=lambda item: item[1], reverse=True)
top_services = [service for service, cost in sorted_services[:3]]
# Add total_cost and dashboard dictionary below
# Your code here

Hint

Use the sum() function on service_costs.values() and create a dictionary with the required keys and values.

Practice

1. What is the main purpose of an AWS billing dashboard?

easy

A. To write code for AWS Lambda functions

B. To create new AWS resources automatically

C. To monitor server uptime and performance

D. To show your cloud costs clearly and help manage your budget

Solution

1. Step 1: Understand the billing dashboard function

   The billing dashboard is designed to display cloud costs and usage clearly.

2. Step 2: Identify the correct purpose

   It helps users track spending and manage budgets, not resource creation or monitoring uptime.

3. Final Answer:

   To show your cloud costs clearly and help manage your budget -> Option D

4. Quick Check:

   Billing dashboard = cost visibility [OK]

Hint: Billing dashboard = clear cost view [OK]

Common Mistakes:

• Confusing billing dashboard with resource management
• Thinking it monitors server performance
• Assuming it automates AWS resource creation

2. Which AWS service provides the billing dashboard to track your cloud costs?

easy

A. AWS Cost Explorer

B. AWS CloudTrail

C. AWS Lambda

D. Amazon S3

Solution

1. Step 1: Identify AWS services related to billing

   AWS Cost Explorer is the service designed for cost tracking and billing dashboards.

2. Step 2: Eliminate unrelated services

   CloudTrail tracks API calls, Lambda runs code, and S3 stores data, so they don't provide billing dashboards.

3. Final Answer:

   AWS Cost Explorer -> Option A

4. Quick Check:

   Cost Explorer = billing dashboard tool [OK]

Hint: Cost Explorer shows billing info clearly [OK]

Common Mistakes:

• Choosing CloudTrail which tracks logs, not costs
• Confusing Lambda with billing tools
• Selecting S3 which is for storage only

3. You create a billing dashboard with a line chart showing monthly AWS costs. If your costs were $100 in January, $150 in February, and $120 in March, what trend does the chart show?

medium

A. Costs decreased every month

B. Costs are steadily increasing every month

C. Costs increased from January to February, then decreased in March

D. Costs stayed the same each month

Solution

1. Step 1: Analyze the monthly cost values

   January = $100, February = $150, March = $120 shows an increase then a decrease.

2. Step 2: Interpret the trend on the line chart

   The line rises from January to February, then falls from February to March.

3. Final Answer:

   Costs increased from January to February, then decreased in March -> Option C

4. Quick Check:

   100 -> 150 ↑, then 150 -> 120 ↓ [OK]

Hint: Look for rises and falls in monthly values [OK]

Common Mistakes:

• Assuming costs always increase
• Ignoring the drop in March
• Thinking costs stayed constant

4. You set up a billing dashboard but notice the monthly cost chart shows zero for all months. What is the most likely cause?

medium

A. Your AWS account has no active resources

B. You forgot to enable cost data collection in AWS Cost Explorer

C. The chart type is set to pie instead of line

D. You used the wrong AWS region in the dashboard

Solution

1. Step 1: Check data collection settings

   If cost data collection is not enabled, the dashboard will show zero costs.

2. Step 2: Consider other causes

   While no active resources or wrong region might affect data, the most common cause is missing cost data collection.

3. Final Answer:

   You forgot to enable cost data collection in AWS Cost Explorer -> Option B

4. Quick Check:

   Enable cost data collection to see costs [OK]

Hint: Enable cost data collection first [OK]

Common Mistakes:

• Assuming no resources means zero costs always
• Changing chart type without checking data
• Ignoring cost data collection settings

5. You want to create a billing dashboard that shows daily AWS costs for the last 30 days and highlights days when costs exceed $200. Which AWS feature combination should you use?

hard

A. AWS Cost Explorer with custom filters and a conditional formatting table

B. AWS CloudWatch to monitor costs and AWS Lambda to send alerts

C. Amazon S3 to store cost data and Amazon QuickSight for visualization

D. AWS IAM to restrict access and AWS Budgets to set alerts

Solution

1. Step 1: Identify tools for cost visualization and filtering

   AWS Cost Explorer allows creating custom filters and visualizations for daily costs.

2. Step 2: Use conditional formatting to highlight costs over $200

   Cost Explorer supports tables with conditional formatting to highlight high costs.

3. Final Answer:

   AWS Cost Explorer with custom filters and a conditional formatting table -> Option A

4. Quick Check:

   Cost Explorer + filters + formatting = daily cost highlights [OK]

Hint: Use Cost Explorer filters and formatting for highlights [OK]

Common Mistakes:

• Using CloudWatch which is for performance, not billing visualization
• Choosing S3 without visualization tools
• Confusing IAM and Budgets with visualization features