L16. AWS Cost Management: Cost Explorer, Budgets, and the Pricing Calculator
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Controlling AWS costs requires the right tools. The Cloud Practitioner exam tests AWS Cost Explorer, AWS Budgets, AWS Pricing Calculator, AWS Cost and Usage Reports, and cost optimization strategies.
AWS Pricing Calculator
The AWS Pricing Calculator (calculator.aws) estimates the cost of AWS services before deploying them. Use when: planning a new architecture, sizing a migration, or preparing a business case. You configure resources and get a monthly cost estimate. vs. Total Cost of Ownership (TCO): TCO Calculator compares on-premises vs. AWS costs; Pricing Calculator estimates AWS-only costs.
AWS Cost Explorer
Cost Explorer is a visual tool to analyze AWS spending and usage over time. Features:
- View costs by service, account, Region, tag, or usage type
- Forecast future costs based on historical usage
- Identify cost anomalies
- View Savings Plans and Reserved Instance recommendations
AWS Budgets
AWS Budgets lets you set custom spending thresholds and receive alerts when actual or forecasted costs exceed them. Budget types:
- Cost budget: alert when spending exceeds a dollar threshold
- Usage budget: alert when consumption of a specific service exceeds a usage threshold
- Savings Plans/RI budget: alert on utilization and coverage
AWS Cost and Usage Report (CUR)
The most comprehensive cost data available from AWS. Delivers detailed billing data to an S3 bucket in CSV or Parquet format. Use when: you need granular per-resource cost data for custom analysis, chargeback, or integration with Athena or QuickSight.
AWS Cost Anomaly Detection
Machine learning-based service that monitors your costs and alerts you to unexpected spending.
Cost Optimization Best Practices
- Right-size resources: use Compute Optimizer recommendations to avoid over-provisioning
- Use Reserved Instances or Savings Plans for steady-state workloads
- Leverage Spot Instances for interruptible workloads
- Delete idle resources: snapshots, unattached EBS volumes, idle Load Balancers
- Use S3 lifecycle policies to move data to cheaper tiers automatically
- Set budgets and alerts to avoid bill surprises
| Tool | Purpose |
|---|---|
| Pricing Calculator | Estimate costs before deployment |
| Cost Explorer | Analyze and visualize historical spending |
| AWS Budgets | Set alerts and automated actions on spending thresholds |
| Cost and Usage Report | Granular per-resource billing data |
- ✓AWS Pricing Calculator estimates future costs before deployment; does not connect to your account
- ✓AWS Cost Explorer visualizes and analyzes actual spending and usage trends with forecasting
- ✓AWS Budgets sets spending thresholds with email/SNS alerts and optional automated policy actions
- ✓Cost and Usage Report provides the most granular billing data; delivered to S3 for custom analysis
- ✓Right-sizing with Compute Optimizer and deleting idle resources are the most common cost optimization actions
1. A finance team wants to receive an email alert when monthly AWS spending exceeds $5,000. Which AWS service should they configure?
2. A solutions architect wants to estimate the monthly cost of running a 3-tier web application on AWS before any resources are deployed. Which tool should they use?
Recommended: Pluralsight
Complement these lessons with Pluralsight: structured CLF-C02 learning paths, AWS hands-on labs, and realistic practice questions for exam day.