What is the CLF-C02 certification?
AWS positions the Cloud Practitioner as proof that you understand the value of the AWS Cloud, can describe its core services and their common use cases, grasp basic security and compliance concepts and the shared responsibility model, and can reason about pricing, billing, and account management. It is deliberately vendor-focused: every question is about how AWS works, not about generic IT.
Unlike the associate and professional tiers, CLF-C02 does not expect you to design architectures or troubleshoot infrastructure. Instead it checks that you can hold a credible conversation about the cloud — enough to collaborate with engineering teams, understand a bill, or scope a migration. That framing is why non-engineers pass it routinely with focused study.
What topics are on the CLF-C02 exam?
The CLF-C02 exam is organised into four weighted domains. The percentages below are the share of scored questions each domain contributes, so you should bias your study time toward the heavier domains — in this exam, Cloud Technology and Security together account for nearly two-thirds of your score.
| Exam domain | Exam weight | Practice |
|---|---|---|
| Cloud Concepts | 24% | Practice this topic → |
| Security and Compliance | 30% | Practice this topic → |
| Cloud Technology and Services | 34% | Practice this topic → |
| Billing, Pricing, and Support | 12% | Practice this topic → |
Cloud Concepts (24%)
Covers the value proposition of cloud computing — elasticity, agility, economies of scale, and the shift from capital expenditure to operational expenditure — plus cloud economics and the six pillars of the AWS Well-Architected Framework. Expect questions on the benefits of moving to the cloud and on high-level migration and adoption strategy.
Security and Compliance (30%)
The heaviest security-focused domain. It centres on the AWS shared responsibility model (what AWS secures versus what the customer secures), Identity and Access Management concepts such as users, groups, roles, policies, MFA, and protecting the root account, plus security and compliance services like Shield, WAF, GuardDuty, Inspector, KMS, and AWS Artifact.
Cloud Technology and Services (34%)
The largest domain by weight. It spans the core service families — compute (EC2, Lambda, containers), storage (S3, EBS, EFS, Glacier), databases (RDS, DynamoDB, Aurora, Redshift), and networking (VPC, Route 53, CloudFront) — along with AWS global infrastructure of Regions, Availability Zones, and edge locations, and the ways you can interact with AWS.
Billing, Pricing, and Support (12%)
The smallest domain, but a reliable source of easy marks. It covers pricing models (On-Demand, Reserved, Spot, and Savings Plans), cost-management tools (Cost Explorer, AWS Budgets, the Cost and Usage Report, and the Billing dashboard), AWS Organizations and consolidated billing, and the four support plans from Basic through Enterprise.
Is the CLF-C02 hard?
By professional-certification standards the CLF-C02 is considered easy-to-moderate: it is a foundational exam, the questions are recognition-based rather than scenario-heavy, and there are no hands-on labs. Most candidates who study consistently for two to six weeks pass comfortably on their first attempt.
The difficulty that does exist comes from breadth. AWS has hundreds of services, and the exam can name-drop services you have never touched and ask which one fits a use case. The trick is not deep expertise but confident pattern-matching — knowing, for example, that "petabyte-scale data warehouse" points to Redshift and "serverless function" points to Lambda.
How many questions are on the CLF-C02 exam and how long is it?
The live CLF-C02 exam contains 65 questions to be answered in 90 minutes, delivered as multiple-choice (one correct answer) and multiple-response (two or more correct answers) items. Fifteen of the 65 are unscored questions AWS uses to trial future content, but you cannot tell which, so you should answer every question with equal care.
You can sit the exam at a Pearson VUE test centre or through online proctoring from home. Our full-length practice mock mirrors this format with 65 questions in a 90-minute timer so you can rehearse pacing — roughly 80 seconds per question — before test day.
What score do you need to pass the CLF-C02?
AWS scores the CLF-C02 on a scaled range of 100 to 1,000, and you need 700 to pass. The score is scaled rather than a simple percentage because question difficulty varies, and AWS does not publish per-domain pass marks — you need an overall 700, so a weak domain can be offset by a strong one. Our practice mock flags a pass at 70% to give you a comparable target.
How much does the CLF-C02 exam cost?
The CLF-C02 exam costs 100 USD (prices vary slightly by region and currency), and the certification is valid for three years before it needs recertification. Everything on this hub — questions, mock exams, glossary, and domain guides — is completely free, so you can walk into the paid exam already confident you are ready.
Who should take the CLF-C02?
The Cloud Practitioner is aimed at a deliberately wide audience. AWS recommends it for people in sales, marketing, finance, legal, procurement, and project or product management who work alongside technical teams, as well as students and career-changers taking their first step into cloud.
It is also a sensible warm-up for future engineers before they attempt the Solutions Architect Associate or Developer Associate exams, because it establishes the vocabulary and mental model those harder certifications assume you already have.
What jobs and salaries can the CLF-C02 lead to?
On its own the Cloud Practitioner rarely lands a senior role, but it is a recognised signal for entry-level and cloud-adjacent positions: cloud support associate, junior cloud administrator, technical account or sales roles, and project coordinators on cloud initiatives. For non-technical staff it demonstrates the literacy employers increasingly expect.
Compensation for these roles is commonly reported in the mid-five-figure to low-six-figure range in the United States, but it varies enormously with geography, seniority, and whether the certification is paired with hands-on experience or a degree. Treat any single salary figure with caution and view CLF-C02 as a door-opener rather than a guaranteed raise.
How long does it take to study for the CLF-C02?
A candidate with some IT exposure can be ready in one to two weeks of focused study; a complete beginner should plan for four to six weeks at roughly an hour a day. The most efficient path is to spend the first block learning the service families, then switch almost entirely to timed practice questions so you get used to how AWS phrases scenarios.
A proven weekly rhythm looks like this: spend your first two weeks reading one domain at a time and drilling its topic quiz immediately afterwards, so every concept is tested the day you learn it. In week three, switch to mixed practice across all domains and review every explanation — including for questions you answered correctly, because CLF-C02 distractors are built from real service confusions such as Security Groups versus NACLs, or On-Demand versus Reserved pricing. In the final week, sit both timed mock exams under real conditions: no pausing, no lookups, 90 minutes on the clock. Candidates who score above 80 percent on two consecutive mocks pass the real exam at a very high rate, while a score in the 60s almost always means one weak domain — use the per-domain results screen here to find it, then drill that single topic again before booking your seat.
How should you prepare for the CLF-C02?
Start by reading through each domain above so you know where the marks are, then work the practice questions domain by domain. Every question on MockAPI reveals a full explanation and tells you why each wrong answer is wrong — that second part is where most of the learning happens, because the exam is built around plausible-looking distractors.
When you can answer topic drills comfortably, move to a full-length timed mock to rehearse pacing and stamina, and use the glossary to close any gaps in terminology. Aim to score consistently above the pass mark on mocks before you book the real thing.
Can you take the CLF-C02 exam online?
Yes. You can sit the CLF-C02 either at a Pearson VUE testing centre or online from home with OnVUE remote proctoring, and AWS also offers Pearson VUE-delivered exams at select centres. For the online option you need a quiet, private room, a stable internet connection, a webcam, and government-issued photo ID; a proctor watches the session, and you will be asked to show your surroundings before you begin.
If you do not pass, AWS lets you retake the exam after a 14-day waiting period, with no limit on the number of attempts, though each attempt requires a new paid registration. Results are typically available within a few business days and are posted to your AWS Certification account, where you can also download your certificate and digital badge once you pass.
What certification should you take after the CLF-C02?
The Cloud Practitioner is designed to be a launch pad rather than a destination. The most common next move for people heading into engineering is the AWS Certified Solutions Architect – Associate (SAA-C03), which goes deep on designing resilient, cost-effective architectures; developers often choose the Developer – Associate (DVA-C02), and operations staff the SysOps Administrator – Associate.
From the associate tier you can progress to the professional certifications (Solutions Architect – Professional and DevOps Engineer – Professional) or branch into specialty credentials in areas such as security, networking, machine learning, and data analytics. Pairing any of these with real hands-on project experience is what turns a certificate into a career.
What can you practice on this CLF-C02 hub?
Everything below is free and needs no account. Jump into a full-length timed mock, drill a single weak domain, review individual questions with full explanations, or brush up on the terminology in the glossary.
What do real CLF-C02 practice questions look like?
Here is a sample of the verified CLF-C02 questions on this hub. Each links through to the full question, the correct answer, and an explanation of why every other option is wrong.
- A data analytics team needs to run SQL queries against large volumes of log files stored in Amazon S3. The team wants to analyze the data without prov…
- A data analytics team needs to run SQL queries against large volumes of log files stored in Amazon S3. The team wants to analyze the data without havi…
- A company has a web application that receives customer orders. The application currently writes orders directly to a database, but during peak traffic…
- A media company records customer support phone calls and wants to automatically convert the recorded audio files into written text so the transcripts…
- A finance team wants to be notified by email whenever the company's AWS spending is forecasted to exceed $5,000 for the month, so they can take action…
- A company is running a critical application on AWS that uses third-party software installed on EC2 instances. The development team needs guidance on i…
- A gaming company needs to store and retrieve player leaderboard data that updates frequently during gameplay. The application must support millisecond…
- A retail company is building an e-commerce application that requires a database to store shopping cart data. The cart data needs to be retrieved and u…
- A retail company currently operates its e-commerce platform on-premises with servers sized to handle peak holiday traffic. During most of the year, th…
- An enterprise runs many separate AWS accounts across its departments. They want to receive a single monthly bill covering all accounts and to combine…
Which CLF-C02 terms should you know?
Start with these high-frequency terms, then explore the full glossary. Each links to a plain-English definition written for the CLF-C02 exam.