AWS Pricing & Billing Complete Guide — CLF-C02 Domain 4 (Billing, Pricing & Support, 12%) + 30 Practice Questions

AWS pricing is CLF-C02’s lowest-weighted domain (12%, around 6 questions), but it’s also the most concrete and direct-points domain — there’s no ambiguity, so questions translate directly into score. This article systematizes pricing models, Free Tier (2025 overhaul), AWS Organizations, cost-management tools, support plans (2026–2027 restructuring), Marketplace, and Partner Network — everything that Domain 4 covers — and finishes with 30 practice questions covering all of CLF-C02.

With Domain 3 Core Services (published 2026-05-28) giving you 30+ service knowledge, Domain 2 (published 2026-05-27), and Domain 1 (published 2026-05-26) locked in, you are now at the finish line of CLF-C02 preparation.

Domain 4 Overview — Why 12% Cannot Be Underestimated

Domain 4: Billing, Pricing and Support is the lowest-weight domain in CLF-C02 at 12% (around 6 questions out of 50 scored). However, it’s the most concrete domain — pricing facts, support plan facts, billing tool names — almost no ambiguity. Questions become “memorize this fact” rather than “interpret this scenario.” This is why students who skip it lose 6 easy points.

The four sub-areas: (1) AWS pricing models (On-Demand / Reserved / Savings Plans / Spot), (2) Free Tier and account creation (12-month free, always free, 2025 credit-based overhaul), (3) Cost management tools (Cost Explorer, Budgets, Cost & Usage Report, Trusted Advisor), (4) Support plans (Basic free / Developer / Business / Enterprise On-Ramp / Enterprise — restructuring through 2026–2027).

Four Billing Models (EC2-Centric)

Reserved Instances commit to a specific instance type and Region. Standard RIs offer the deepest discount but no flexibility, Convertible RIs allow changing instance family in exchange for shallower discounts. Payment options: All Upfront (deepest discount), Partial Upfront, No Upfront (smallest discount).

Savings Plans offer two flavors: Compute Savings Plans apply across EC2 / Fargate / Lambda and any instance type / Region / OS. EC2 Instance Savings Plans commit to specific instance family in a specific Region for deeper discount. For most users, Compute Savings Plans deliver the right balance of discount and flexibility.

Spot Instances use AWS’s spare capacity and can be reclaimed with 2 minutes notice. For AI training jobs (checkpoint-able, fault-tolerant), Spot delivers 70–90% cost savings vs On-Demand. For inference APIs (must respond instantly), Spot is unsuitable.

AWS Free Tier — Three Types and the 2025 Overhaul

Historically, AWS Free Tier had three categories: 12-month free (EC2 t2.micro 750 hours/month, S3 5GB, etc., free for the first 12 months), Always Free (Lambda 1M invocations, DynamoDB 25 GB, etc., free forever), and Short-term trials (Inspector 90 days, etc.).

On July 15, 2025, AWS launched a major overhaul. New accounts created from this date forward choose between a Paid Plan (for production use) or a Free Plan (for exploration / POCs) at signup. The Free Plan provides up to $200 in credits ($100 automatic at signup + $100 from completing onboarding tasks). Free Plan accounts expire after 6 months or when credits are exhausted, whichever comes first.

Accounts created before July 15, 2025 remain on the legacy Free Tier program (12-month free + Always Free + short-term trials). CLF-C02 may test “which Free Tier model applies to new accounts created in 2026?” — the answer is the credit-based Free Plan.

AWS Organizations and Consolidated Billing

AWS Organizations is the multi-account management service. Multiple AWS accounts (Production, Development, Staging, Sandbox, etc.) are managed under a single Organization with policy-based control. The Management Account (formerly Master Account) is the controller; Member Accounts are the controlled accounts.

Consolidated Billing aggregates all Organization accounts into a single invoice. This unlocks two financial advantages: Volume discounts (S3, EC2 reserved pricing tiers apply across the Org’s aggregated usage), and Shared Reserved Instances / Savings Plans (a Reserved Instance purchased in one account can apply discounts to any account in the Organization).

Service Control Policies (SCP) are the cross-account permission guardrails. An SCP applied at the OU (Organizational Unit) level restricts what any account underneath can do, regardless of their own IAM policies. Example: “Deny all actions outside us-east-1 and ap-northeast-1” — applied at the org root, no account in the org can use any other Region.

CLF-C02 typically asks “What’s the primary benefit of Consolidated Billing?” — answer: volume discounts and shared RIs. “Which service applies SCPs?” — answer: AWS Organizations.

Four Cost Management Tools

Cost Explorer is the AWS Console’s cost analysis dashboard. Filter by service, region, or tag for granular cost breakdown. ML-based forecast predicts up to 12 months of future spend.

AWS Budgets sends alerts when actual / forecasted spend exceeds defined thresholds. Pair with SNS topics for Slack or email notifications. “Set a $500 monthly budget for the dev environment and alert at 80%” — that’s the standard setup.

Cost & Usage Report (CUR) delivers granular billing data (hourly / daily / monthly) to an S3 bucket as Parquet / CSV files. Combined with Athena or QuickSight, you build custom cost dashboards — the standard pattern for FinOps teams.

Trusted Advisor analyzes the AWS account against best practices across 5 categories. Cost recommendations include “idle EC2 instances,” “underutilized EBS volumes,” “Reserved Instance opportunities” — direct optimization actions.

Support Plans (Major 2026–2027 Restructuring)

AWS announced a major Support Plan restructuring. The legacy 5-tier model is being phased out, and a new 3-tier model is taking over through 2026 and 2027.

Legacy 5 Tiers (Sunset on January 1, 2027)

New 3 Tiers (Phased Migration Starting 2026)

The transition timeline matters. Business Support stopped accepting new subscriptions on December 2, 2025. Existing Developer / Business / Enterprise On-Ramp customers can continue using their plans until December 31, 2026 but must actively opt-in to Business Support+ before January 1, 2027. Enterprise On-Ramp customers will be automatically migrated to Enterprise Support at contract renewal.

For CLF-C02 (current exam), questions still test the legacy 5-tier model. Memorize the names, response times, and minimum costs. The new 3-tier structure may appear from late 2026 exams onward, so check the latest Exam Guide when scheduling.

AWS Marketplace and Partner Network

AWS Marketplace is a curated catalog of third-party software, data, and services. Buyers can purchase pre-configured AMIs, SaaS products, machine learning models, and professional services with consolidated AWS billing. Sellers (ISVs) reach millions of AWS customers.

AWS Partner Network (APN) is the global community of consulting and technology partners. APN tiers: Select (entry), Advanced (track record), Premier (top tier). Customers find APN partners through the APN Partner Finder.

CLF-C02 may ask “Where can customers purchase third-party software with consolidated AWS billing?” — answer: AWS Marketplace. “What’s the top tier of the AWS Partner Network?” — answer: Premier.

CLF-C02 Full-Range Practice Questions (30 Items)

30 practice questions covering all four domains. Answers follow at the end.

Answers: 1-A / 2-B / 3-B / 4-C / 5-B / 6-A / 7-B / 8-B / 9-C / 10-C / 11-C / 12-C / 13-B / 14-B / 15-D / 16-C / 17-C / 18-C / 19-B / 20-B / 21-B / 22-C / 23-B / 24-B / 25-C / 26-B / 27-C / 28-B / 29-C / 30-B

Pre-Exam Final Checklist

One week before: Take 1 full AWS Official Practice Exam ($20 from AWS Skill Builder). Pace is 75-80% — adjust study based on weak domains. 3 days before: Review wrong answers from practice exams. Re-read AWS Well-Architected 6 pillars and the 6 benefits of cloud adoption — these word-recall items appear directly on the exam. 1 day before: Get 7+ hours of sleep, don’t cram new material.

Day of exam: For Pearson VUE test center, arrive 30 minutes early with two forms of ID (passport + driver’s license). For OnVUE online proctored, set up the room 60 minutes ahead — clear the desk, close all apps, single monitor only. The proctor’s check takes 20-30 minutes.

Practice Question Commentary Pointers

For questions you got wrong, identify the pattern. Service identification wrong (Q8, Q11, Q13, Q14): Memorize the elevator pitch for each service. Pricing wrong (Q15, Q17, Q18, Q23, Q28): Numbers must be exact. Re-read this article’s tables. Concept confusion (Q2, Q3, Q4): Re-read the Well-Architected pillars and 6R strategies in Domain 1. Responsibility split wrong (Q5): Re-read the Shared Responsibility table in Domain 2.

Score 25 / 30 or higher and you’re ready. Below 20 / 30 means more study needed — focus on Domain 3 (largest weight) and Domain 2 (second largest).

Final Adjustments — Day Before and Day Of

The day before, don’t add new material. Use the time for a single review pass over the AWS Well-Architected 6 pillars, the 6 benefits, the four pricing models, and the support plan table — the direct-recall items most likely to appear.

On exam day, allow 1 minute 20 seconds per question. Flag uncertain items immediately and move on — never spend more than 2 minutes on a single question. After all 65 questions, use the remaining 4 minutes to revisit flagged items. The result appears on screen instantly — passing CLF-C02 unlocks the 50% discount voucher for SAA-C03, so start applying it the next day.

Conclusion — From CLF-C02 to SAA-C03

AWS pricing — four billing models, Free Tier 2025 overhaul, Organizations & Consolidated Billing, four cost management tools, support plans 2026–2027 restructuring, Marketplace, Partner Network, plus 30 full-range practice questions — covered in one read. With Domain 4 locked in, the CLF-C02 preparation is complete across all four domains.

The next step is AWS Solutions Architect Associate (SAA-C03) — the next tier up. SAA-C03 is the most popular AWS certification globally, and the design-thinking it requires is the foundation for any cloud career. The next article walks through SAA-C03’s 4 domains and the 3-month study roadmap.

References

ブラウザだけでできる本格的なAI画像生成【ConoHa AI Canvas】

swiftwand

X

AIを使って、毎日の生活をもっと快適にするアイデアや将来像を発信しています。 初心者にもわかりやすく、すぐに取り入れられる実践的な情報をお届けします。 Sharing ideas and visions for a better daily life with AI. Practical tips that anyone can start using right away.