4.2 - AWS cost management and billing tools
AWS Certified Cloud Practitioner objective 4.2 covers the tools that help you understand and control AWS spend. AWS Cost Explorer lets you visualise, understand and forecast your costs and usage over time. AWS Budgets lets you set a custom cost or usage threshold and receive alerts when you approach or exceed it. Consolidated billing in AWS Organizations gives one bill for all accounts and helps reduce cost because combined usage can reach volume discount tiers. AWS Trusted Advisor gives automated recommendations - such as idle load balancers, underused resources and security checks - to optimise cost and reliability. Athena and similar services bill per data scanned, and most AI services are pay-as-you-go. Expect scenario questions that describe visualising or forecasting spend, alerting on a threshold, combining accounts for discounts, or automated optimisation tips, and ask which AWS cost tool fits.
Visualise + forecast spend = Cost Explorer. Threshold alerts = AWS Budgets. One bill + volume discounts across accounts = consolidated billing (Organizations). Automated optimisation tips = Trusted Advisor.
Practice questions
1. Which tool lets you visualize, understand, and forecast your AWS costs and usage over time?
- AWS Cost Explorer (correct answer)
- AWS CloudTrail
- Amazon Inspector
- AWS Artifact
Cost Explorer shows cost/usage trends and forecasts. Budgets alert on thresholds; the Cost & Usage Report gives the most detailed billing data.
2. What is the main billing benefit of using AWS Organizations with consolidated billing?
- It doubles the Free Tier for every account
- One bill for all accounts plus combined volume discounts (correct answer)
- It removes all charges for member accounts
- It disables Cost Explorer for security
Consolidated billing gives one payer bill across accounts and aggregates usage so you can reach volume pricing tiers sooner. It doesn't make usage free.
3. A finance manager wants an automatic alert when monthly AWS spending is forecast to exceed a set threshold. Which tool should be configured?
- AWS Budgets (correct answer)
- AWS Cost Explorer
- AWS Artifact
- AWS Trusted Advisor
AWS Budgets lets you set cost or usage thresholds and sends alerts when actual or forecasted spend crosses them. Cost Explorer visualizes trends but does not send threshold alerts.
4. How do AWS Cost Explorer, AWS Budgets, and the Pricing Calculator differ?
- All three only send invoices
- Cost Explorer analyzes past/current spend; Budgets alerts on thresholds; Pricing Calculator estimates future costs (correct answer)
- Budgets estimates costs before you build; Pricing Calculator sends alerts
- They are three names for one tool
Cost Explorer visualizes and analyzes historical and current usage and spend. AWS Budgets lets you set thresholds and get alerts when costs or usage exceed them. The Pricing Calculator estimates the cost of a planned architecture before you build it.
5. Which AWS Support plan is the lowest tier that provides a Technical Account Manager (TAM) and a designated concierge experience?
- Basic
- Developer
- Enterprise (correct answer)
- Business
The Enterprise Support plan includes a designated Technical Account Manager and concierge support. Business and Developer plans do not include a TAM.
6. Which tool lets you visualize, understand and forecast your AWS spending over time?
- AWS Trusted Advisor
- AWS Artifact
- AWS Cost Explorer (correct answer)
- Amazon Inspector
AWS Cost Explorer provides graphs and reports to analyze and forecast spend by service, account or tag. Budgets lets you set alerts; Trusted Advisor gives best-practice checks including some cost ones.