The AWS Certified Cloud Practitioner (CLF-C02) is the most popular entry-level cloud certification in the world, and for good reason. It validates your foundational understanding of AWS Cloud services, pricing, security, and architecture — skills that are increasingly required across every technical and business role. Whether you’re a developer, project manager, sales professional, or career changer, CLF-C02 opens the door to the AWS ecosystem.
This guide covers everything you need to know about the exam in 2026, from format and domains to preparation strategy and exam-day logistics.
What Is the AWS Certified Cloud Practitioner?
The AWS Certified Cloud Practitioner is a foundational-level certification offered by Amazon Web Services. It’s designed for individuals who want to demonstrate an overall understanding of the AWS Cloud, regardless of their specific technical role. Unlike associate- or professional-level AWS certifications, the Cloud Practitioner does not require deep hands-on experience — it tests conceptual understanding.
Who Should Take This Exam?
The CLF-C02 is ideal for a broad audience:
- Career changers entering cloud computing or IT for the first time
- Business professionals (project managers, product owners, sales) who work alongside technical teams
- Developers and engineers who want a structured introduction to AWS before pursuing associate-level certs
- Students and recent graduates looking to build a credential in cloud computing
- IT professionals from non-AWS backgrounds (on-premises, Azure, GCP) wanting to learn AWS fundamentals
AWS recommends at least 6 months of exposure to the AWS Cloud (through training courses, hands-on use, or working alongside AWS practitioners), though many people pass with less by using structured study resources.
CLF-C02 Exam Specifications
Here are the key details you need to know:
| Specification | Detail |
|---|---|
| Exam Code | CLF-C02 |
| Exam Type | Multiple choice and multiple select |
| Number of Questions | 65 (50 scored + 15 unscored) |
| Duration | 90 minutes |
| Passing Score | 700 out of 1000 (scaled scoring) |
| Exam Cost | $100 USD |
| Validity | 3 years |
| Delivery | Pearson VUE (test center or online proctored) |
| Prerequisites | None |
| Languages | English, Japanese, Korean, Simplified Chinese, and more |
| Retake Policy | 14-day waiting period between attempts |
About the Scoring
AWS uses scaled scoring from 100 to 1000. A score of 700 is required to pass. The 15 unscored questions are experimental items that AWS uses for future exam development — you won’t know which questions are unscored, so treat every question as if it counts.
Exam Domains and Weightage
The CLF-C02 exam is organized into four domains. Understanding the weightage helps you prioritize your study time:
| Domain | Weight | Key Focus |
|---|---|---|
| Cloud Concepts | 24% | Benefits of AWS, migration strategies, cloud economics |
| Security and Compliance | 30% | Shared responsibility model, IAM, security services, compliance |
| Cloud Technology and Services | 34% | Compute, storage, database, networking, AI/ML services, deployment |
| Billing, Pricing, and Support | 12% | Pricing models, cost management tools, support plans |
Domain 1: Cloud Concepts (24%)
This domain tests your understanding of what cloud computing is and why organizations adopt it.
Key topics include:
- Six advantages of cloud computing (trade CapEx for OpEx, benefit from economies of scale, stop guessing capacity, increase speed and agility, stop spending money on data centers, go global in minutes)
- Cloud deployment models: public, private, hybrid
- AWS Well-Architected Framework pillars: Operational Excellence, Security, Reliability, Performance Efficiency, Cost Optimization, Sustainability
- Migration strategies (the 7 Rs): Rehost, Replatform, Repurchase, Refactor, Retire, Retain, Relocate
- AWS Cloud Adoption Framework (CAF)
Domain 2: Security and Compliance (30%)
This is the heaviest domain on the exam. AWS takes security seriously, and so does this certification.
Key topics include:
- Shared Responsibility Model: AWS is responsible for security “of” the cloud (hardware, infrastructure, regions). You are responsible for security “in” the cloud (data, IAM, encryption, OS patches on EC2)
- IAM (Identity and Access Management): Users, groups, roles, policies, MFA, least privilege principle
- Security services: AWS Shield, AWS WAF, Amazon GuardDuty, AWS Inspector, AWS Macie, AWS Security Hub, AWS KMS
- Compliance programs: SOC, PCI DSS, HIPAA, FedRAMP
- AWS Artifact: Self-service portal for compliance reports
Domain 3: Cloud Technology and Services (34%)
The largest domain covers the breadth of AWS services. You don’t need deep expertise — focus on understanding what each service does and when to use it.
Compute services: EC2 (virtual servers), Lambda (serverless), ECS/EKS (containers), Elastic Beanstalk (PaaS), Lightsail (simplified compute)
Storage services: S3 (object storage), EBS (block storage), EFS (file storage), S3 Glacier (archival), Storage Gateway (hybrid)
Database services: RDS (relational), DynamoDB (NoSQL), Aurora (MySQL/PostgreSQL compatible), ElastiCache (in-memory), Redshift (data warehouse)
Networking: VPC, CloudFront (CDN), Route 53 (DNS), Direct Connect, API Gateway, Elastic Load Balancing
Other key services: CloudFormation (IaC), CloudWatch (monitoring), SNS/SQS (messaging), AWS Organizations, AWS Config, AWS Trusted Advisor
Domain 4: Billing, Pricing, and Support (12%)
This domain is the smallest but often catches people off guard because it requires knowing specific pricing details.
Key topics include:
- Pricing models: On-Demand, Reserved Instances (1 or 3 year), Savings Plans, Spot Instances, Dedicated Hosts
- Free Tier types: Always Free, 12 Months Free, Trials
- Cost management tools: AWS Cost Explorer, AWS Budgets, AWS Cost and Usage Report, AWS Pricing Calculator
- Support plans: Basic (free), Developer ($29/month), Business ($100/month), Enterprise On-Ramp ($5,500/month), Enterprise ($15,000/month)
- AWS Organizations and consolidated billing
How to Prepare for the CLF-C02
Recommended Study Timeline
Most people can prepare in 4-6 weeks with consistent daily study:
| Week | Focus Area | Hours/Week |
|---|---|---|
| Week 1 | Cloud Concepts + AWS overview | 8-10 |
| Week 2 | Security and Compliance (IAM, Shared Responsibility) | 10-12 |
| Week 3 | Cloud Technology and Services (Compute, Storage, Database) | 10-12 |
| Week 4 | Cloud Technology continued (Networking, other services) | 10-12 |
| Week 5 | Billing, Pricing, and Support | 6-8 |
| Week 6 | Mock exams, review weak areas, final preparation | 10-12 |
Study Resources
Official AWS resources:
- AWS Cloud Practitioner Essentials (free digital course on AWS Skill Builder)
- AWS Documentation and whitepapers (Well-Architected Framework, Overview of Amazon Web Services)
- AWS Free Tier for hands-on exploration
Practice exams (critical for success):
- Sailor.sh AWS Cloud Practitioner Mock Exams — 5 full-length exams with 325+ questions and detailed explanations updated for CLF-C02 2026
- AWS official practice exam (20 questions, available on Skill Builder)
Tips for effective study:
- Don’t just read — test yourself constantly with practice questions
- Create flashcards for service-to-use-case mappings (e.g., “archival storage” → S3 Glacier)
- Understand the “why” behind each service, not just the “what”
- Pay special attention to the Shared Responsibility Model — it appears in multiple question types
- Practice with timed mock exams to build stamina for the 90-minute exam
What to Expect on Exam Day
Online Proctored Exam
If you’re taking the exam at home:
- You’ll need a webcam, microphone, and stable internet connection
- Your workspace must be clear of papers, books, and second monitors
- You’ll go through a check-in process 30 minutes before your scheduled time
- A proctor monitors you via webcam throughout the exam
- You cannot leave your seat during the exam
Test Center Exam
If you prefer a physical testing center:
- Arrive 15 minutes early with two forms of ID
- Personal items (phone, watch, wallet) are stored in a locker
- You’re given a whiteboard or scratchpad for notes
- The testing environment is quiet and monitored
During the Exam
- You have 90 minutes for 65 questions — that’s about 83 seconds per question
- You can flag questions and return to them later
- Read each question carefully — AWS questions often include distractors
- Eliminate obviously wrong answers first, then choose the best remaining option
- For “select TWO” or “select THREE” questions, the number of correct answers is always specified
CLF-C02 vs Other AWS Certifications
| Certification | Level | Hands-On? | Cost | Recommended Experience |
|---|---|---|---|---|
| Cloud Practitioner (CLF-C02) | Foundational | No | $100 | 6 months exposure |
| Solutions Architect Associate | Associate | Some | $150 | 1 year hands-on |
| Developer Associate | Associate | Yes | $150 | 1 year hands-on |
| SysOps Administrator Associate | Associate | Yes | $150 | 1 year hands-on |
The Cloud Practitioner is the natural starting point. After passing, most people move to the Solutions Architect Associate (SAA-C03) as their next certification.
Is the AWS Cloud Practitioner Worth It?
For most people, yes. Here’s why:
Career impact: AWS is the dominant cloud provider with ~32% market share. Employers across every industry value AWS knowledge. The Cloud Practitioner certification signals baseline cloud literacy.
Salary impact: While it’s an entry-level cert, CLF-C02 holders report average salaries of $75,000-$95,000 for cloud-adjacent roles. It’s also a stepping stone to higher-paying associate and professional certifications.
Low barrier to entry: At $100 for the exam with no prerequisites, the investment-to-reward ratio is excellent. Many employers reimburse the exam fee.
Foundation for growth: Understanding AWS fundamentals makes studying for associate-level certs significantly easier. The concepts you learn here — IAM, VPC, S3, EC2, pricing models — appear in every advanced AWS exam.
Frequently Asked Questions
How hard is the AWS Cloud Practitioner exam?
The CLF-C02 is considered one of the easier cloud certifications, but it’s not a cakewalk. Most people who study for 4-6 weeks pass on their first attempt. The key challenge is the breadth of services you need to know at a conceptual level. Using realistic mock exams is the best way to assess your readiness.
What score do I need to pass?
You need a scaled score of 700 out of 1000. AWS doesn’t publish the exact passing percentage, but it’s roughly equivalent to getting 70-72% of scored questions correct.
How many questions are on the CLF-C02 exam?
The exam has 65 questions total — 50 scored and 15 unscored (experimental). You won’t know which are unscored, so answer all questions as if they count.
Can I use notes or reference materials during the exam?
No. The CLF-C02 is a closed-book exam. You cannot access any reference materials, websites, or notes during the exam. A scratchpad or whiteboard is provided at the testing center.
How long is the certification valid?
The AWS Cloud Practitioner certification is valid for 3 years. You can renew by passing the CLF-C02 exam again, or by passing any higher-level AWS certification exam.
Should I get the Cloud Practitioner before Solutions Architect?
If you’re new to AWS, yes. The Cloud Practitioner gives you a solid foundation that makes the Solutions Architect Associate significantly easier to study for. If you already have 1+ year of hands-on AWS experience, you may consider skipping directly to Solutions Architect Associate.
How does CLF-C02 differ from the old CLF-C01?
CLF-C02 (launched in September 2022, still current in 2026) expanded the Security and Compliance domain from 25% to 30%, reduced Cloud Technology from 33% to 34%, and added coverage of newer services like AWS Lake Formation, AWS Glue, and additional AI/ML services. The overall difficulty is slightly higher.
Start Your Preparation Today
The AWS Certified Cloud Practitioner is one of the most accessible and valuable certifications you can earn. With the right study plan and practice exams, you can pass on your first attempt in as little as 4-6 weeks.
Ready to start preparing? Access Sailor.sh’s AWS Cloud Practitioner Mock Exams with 325+ practice questions, detailed explanations, and realistic exam simulations. Our practice exams are fully updated for the CLF-C02 format and reflect the latest 2026 exam content.