AWS Certified Cloud Practitioner (CLF-C02) #8 Domain 4 Billing and Support — Pricing Models, Support Plans, TCO
With #7 we wrapped up Domain 3. Now into the last domain — Billing, Pricing, and Support.
The weight is the smallest at 12%, but the question patterns are formulaic, so this is a domain where near-full marks are realistic. The core is two tables — the four EC2 pricing models and the four Support Plan tiers.
The three pricing principles of AWS #
| Principle | Meaning |
|---|---|
| Pay-as-you-go | No upfront payment, charged only for usage |
| Reserve and save | Up to 75% off with 1- or 3-year commitments |
| Pay less by using more | For S3, data transfer, and similar, unit price drops as usage grows |
Free Tier #
A benefit that lets you use certain services at no cost for 12 months after sign-up. Three kinds:
| Kind | Description | Examples |
|---|---|---|
| 12-Month Free | Limited to 12 months after sign-up | EC2 t2.micro 750 hours/month, S3 5 GB |
| Always Free | Free forever | Lambda 1M requests/month, DynamoDB 25 GB |
| Trials | Limited-period trials | Inspector 90 days, Macie 30 days |
Exam scenario: “Trying AWS for the first time, want to learn without spending money” → Free Tier.
The four EC2 pricing models (exam core) #
This is the most frequently tested table. Memorize the degree of commitment and the discount rate for each model.
| Model | Commitment | Discount | Interruption risk | Use case |
|---|---|---|---|---|
| On-Demand | None | 0% | None | Short-term, unpredictable, first use |
| Reserved Instance (RI) | 1 or 3 years | Up to 75% | None | Steady workloads |
| Savings Plans | 1 or 3 years (committed $/hour) | Up to 72% | None | More flexible than RI |
| Spot Instance | None | Up to 90% | Yes (2-minute notice) | Interruption-tolerant workloads |
| Dedicated Host | Optional | - | None | Licensing, regulatory |
| Dedicated Instance | Optional | - | None | Single-tenant instance |
Scenarios the exam splits on #
| Scenario | Answer |
|---|---|
| Don’t know the usage pattern, want to try it first | On-Demand |
| Stable EC2 usage planned for 3 years, want maximum discount | 3-year RI (All Upfront) |
| Hourly commitment for 1 year with more flexibility than RI | Savings Plans |
| Batch jobs, interruption is acceptable | Spot Instance |
| Workloads tolerant of price fluctuation, such as ad bidding | Spot Instance |
| Software licensing requires a physical server | Dedicated Host |
| Compliance requires single tenancy | Dedicated Instance |
The three payment options of Reserved Instance #
| Option | Upfront | Discount |
|---|---|---|
| All Upfront | Full | Largest |
| Partial Upfront | Partial | Middle |
| No Upfront | None | Smallest |
The two kinds of Savings Plans #
| Kind | Scope | Flexibility |
|---|---|---|
| Compute Savings Plans | EC2 + Fargate + Lambda. Free across instance family and region | Most flexible |
| EC2 Instance Savings Plans | EC2 only in a specific family and region | Larger discount, lower flexibility |
RI vs Savings Plans #
| Item | Reserved Instance | Savings Plans |
|---|---|---|
| Commitment unit | Specific instance type | Hourly committed amount ($/h) |
| Flexibility | Low | High |
| Applicable services | EC2, RDS, ElastiCache, Redshift | EC2, Fargate, Lambda (Compute) |
| Recommended for | Long-term, same instance type | Varied workloads |
If “the most flexible commitment option” appears in the choices, the answer is Savings Plans.
AWS Pricing Calculator #
A free tool for estimating costs before you use AWS.
- Enter usage → get monthly and annual cost estimates
- Save and share scenarios
Exam scenario: “Estimate cost before migrating to AWS” → Pricing Calculator.
TCO (Total Cost of Ownership) #
A total-cost comparison of on-premises vs cloud. Not just raw infrastructure cost, but also operations, power, and personnel costs.
What TCO includes #
- Hardware purchase and maintenance
- Data center lease, power, cooling
- Network and security equipment
- Operations staff (system administrators, DBAs, and the like)
- Cost of downtime
Exam pattern #
“How do you explain the savings of moving to AWS to executives?” → TCO analysis (or AWS Pricing Calculator + TCO Calculator).
Cost monitoring tools #
AWS Cost Explorer #
A free tool that visualizes cost trends.
| Feature | Description |
|---|---|
| Trend visualization | Daily/monthly/yearly cost graphs |
| Filter and group | By service, tag, region, account |
| Forecasting | 12-month forward projection |
| RI / Savings Plans recommendations | Based on usage patterns |
AWS Budgets #
Set a budget and get alerts when it’s exceeded.
| Kind | Description |
|---|---|
| Cost Budget | Set a cost limit |
| Usage Budget | Usage limit (e.g., EC2 hours) |
| RI / Savings Plans Coverage Budget | Commitment coverage |
| Reservation Utilization Budget | RI utilization rate |
Cost and Usage Report (CUR) #
A report that exports the most detailed billing data to S3, where it can be analyzed with BI tools.
Cost Allocation Tags #
Attach tags (e.g., Department=Engineering) to resources, and you can track cost by tag.
Exam scenario: “Separate cloud usage cost by department for charge-back” → Cost Allocation Tags.
Consolidated Billing #
Consolidates billing for multiple AWS accounts in one place. A core feature of AWS Organizations.
Benefits #
- Single bill — One payment method for multiple accounts
- Shared volume discounts — Usage aggregates across all accounts to lower unit price
- Shared RI / Savings Plans — A commitment from one account can apply to others
Exam scenario: “Separate AWS accounts per team while consolidating billing” → Consolidated Billing (AWS Organizations).
Billing Dashboard and AWS Billing Console #
Accessed via the user menu at the top right of the console → “Billing & Cost Management”.
- This month’s charges
- Payment information and invoices
- Cost alert settings
- Free Tier usage tracking
The four Support Plan tiers (exam core) #
Memorize this table and you’ll get nearly every related question.
| Plan | Monthly price | Technical support | Response time (Production down) | Core |
|---|---|---|---|---|
| Basic | Free | None (account and billing only) | - | Default for every account |
| Developer | From $29 | Business-hours email | < 12 hours (System impaired) | Development stage |
| Business | From $100 | 24/7 phone, chat, email | < 1 hour | Production systems |
| Enterprise On-Ramp | From $5,500 | 24/7 + Pool of TAMs | < 30 minutes | Mid-tier production |
| Enterprise | From $15,000 | 24/7 + dedicated TAM (Technical Account Manager) | < 15 minutes | Mission-critical |
What each plan can do (frequently tested) #
| Feature | Basic | Developer | Business | Enterprise |
|---|---|---|---|---|
| AWS Trusted Advisor (full checks) | 6 core | 6 core | Full | Full |
| Concierge Support (billing and account support) | X | X | X | O |
| Infrastructure Event Management | X | X | Extra fee | Included |
| Dedicated TAM | X | X | X | O |
| Well-Architected Review | X | X | X | O |
| Response time (Production system down) | - | - | < 1 hour | < 15 minutes |
Exam patterns #
- “Need 15-minute response when production goes down” → Enterprise
- “Need 1-hour response when production goes down” → Business (or Enterprise)
- “Need full Trusted Advisor checks” → Business or higher
- “Need a dedicated TAM” → Enterprise
- “Need Concierge Support (dedicated billing and account support)” → Enterprise
The right plan for each user #
| Plan | Who it’s for |
|---|---|
| Basic | Learning, personal use |
| Developer | Development stage, downtime acceptable |
| Business | Production system operators (most companies) |
| Enterprise On-Ramp | Mid-tier production |
| Enterprise | Large enterprises, mission-critical |
The five categories of AWS Trusted Advisor (recap) #
Covered in #7, but here again from a cost perspective:
| Category | Cost relevance |
|---|---|
| Cost Optimization | Idle and underused resources, RI recommendations |
| Performance | Instance sizing (avoiding over-provisioning costs) |
| Security | Security checks |
| Fault Tolerance | Availability checks |
| Service Limits | Limit-approaching alerts |
Basic and Developer Support get only 6 core checks; Business and Enterprise get the full set.
AWS Marketplace #
Bundles third-party software billing into the AWS invoice. Includes licensed EC2 AMIs, SaaS apps, and the like.
Exam scenario: “Consolidate third-party security software billing onto AWS” → AWS Marketplace.
AWS Cost Categories vs Cost Allocation Tags #
| Item | Description |
|---|---|
| Cost Allocation Tags | Attach tags to resources to classify cost |
| Cost Categories | User-defined categories combining multiple dimensions (service, tag, account, etc.) |
Cost management scenario mapping #
| Scenario | Answer |
|---|---|
| Pre-usage cost estimation | Pricing Calculator |
| On-prem vs AWS comparison | TCO Calculator |
| Cost trend visualization | Cost Explorer |
| Budget overrun alerts | AWS Budgets |
| Detailed billing data (BI analysis) | Cost and Usage Report (CUR) |
| Per-department cost split | Cost Allocation Tags |
| Multi-account billing consolidation | Consolidated Billing (Organizations) |
| Automated cost-saving opportunity checks | Trusted Advisor |
| Third-party software consolidated billing | AWS Marketplace |
Common traps #
1) “Spot doesn’t get interrupted” #
Spot Instances can be reclaimed by AWS after a 2-minute notice. Use them only for interruption-tolerant workloads.
2) Blurring the line between RI and Savings Plans #
- RI = commitment to a specific instance type
- Savings Plans = commitment to an hourly amount ($/h)
3) Dedicated Host vs Dedicated Instance #
- Dedicated Host — entire physical server (for licensing constraints)
- Dedicated Instance — single-tenant instance (physical server may still be shared at the host level)
4) “Trusted Advisor always does full checks” #
Basic and Developer Support get only the 6 core checks. Full checks come with Business or higher.
5) Support Plan response times #
| Plan | Production down response |
|---|---|
| Developer | (N/A — Production cases not supported) |
| Business | < 1 hour |
| Enterprise | < 15 minutes |
6) “Only Enterprise gets a TAM” #
A dedicated TAM is Enterprise only. Enterprise On-Ramp offers a “Pool of TAMs” (shared), not dedicated.
7) “Free Tier is always free” #
12-Month Free lasts only 12 months after sign-up. Always Free is permanent. Distinguish the two.
Wrap-up #
What this post locked in:
- Three pricing principles — pay-as-you-go / discount on commitment / unit price drops with higher usage
- Three kinds of Free Tier — 12-Month / Always Free / Trials
- Four EC2 pricing models
- On-Demand — no commitment, most expensive, most flexible
- Reserved Instance — 1- or 3-year commitment, up to 75%
- Savings Plans — hourly commitment, more flexible than RI
- Spot — up to 90%, can be interrupted
- Dedicated Host (physical server) vs Dedicated Instance (single-tenant)
- Cost monitoring tools — Pricing Calculator (pre-usage) / Cost Explorer (trends) / Budgets (alerts) / CUR (detail) / Cost Allocation Tags (per-tag)
- Consolidated Billing — billing consolidation through Organizations + shared volume discounts
- Four Support Plan tiers — Basic (free) / Developer (development) / Business (production) / Enterprise (mission-critical, dedicated TAM)
- Traps — Spot interruption / RI vs Savings Plans / Dedicated Host vs Instance / Trusted Advisor check coverage / Support response times / dedicated TAM is Enterprise only / Free Tier kinds
Next — Exam tips and the patterns people miss #
All four domains are wrapped up. Now we move into the dedicated exam prep stage.
#9 Exam Tips and the Patterns People Miss covers a 90-minute pacing strategy, the multiple-response trap, frequently confused service comparisons, problem-solving techniques (elimination, keyword anchoring), and a single-page pre-exam checklist that compresses the key tables from posts 1 through 8.