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  "path": "/bassyc/aws-certified-cloud-practitioner-clf-c02-study-notes-ngl",
  "publishedAt": "2026-06-19T13:17:30.000Z",
  "site": "https://dev.to",
  "tags": [
    "aws",
    "certification",
    "cloud",
    "cloudpractitioner",
    "Exam Guide (CLF-C02)",
    "Exam Prep Enhanced Course (Skill Builder)",
    "Official Practice Exam (Skill Builder)",
    "Exam Prep Standard Course (Skill Builder)",
    "DigitalCloud cheat sheets",
    "DigitalCloud resources page"
  ],
  "textContent": "I sat the AWS Certified Cloud Practitioner (CLF-C02) back in 2024 and passed. CLF-C02 is AWS's foundational certification - broad rather than deep, covering cloud concepts, security, core services, and billing at a level anyone working around AWS should recognise.\n\nIt is the most accessible AWS exam, so if you already work with AWS day to day, a lot of this will be familiar. Treat it as a breadth check rather than a deep technical exam, and calibrate the prep to what you already know.\n\n##  The exam at a glance\n\n|\n---|---\nQuestions | 65 (50 scored, 15 unscored)\nTime | 90 minutes\nFormat | Multiple choice and multiple response\nPassing score | 700 out of 1000 (scaled)\nCost | 100 USD\nValidity | 3 years\n\nThe score is scaled, so you do not need 70% of questions right - it is normalised across question difficulty. The exam is conceptual: it tests whether you understand what AWS services do and when they apply, not whether you can build with them.\n\n##  The four domains\n\nCLF-C02 has four domains. The percentages are the share of scored content, straight from the exam guide - the bigger the share, the more of your study time it deserves.\n\n###  Domain 1 - Cloud Concepts (24%)\n\n> The \"why cloud\" domain. Value proposition of the cloud, the AWS global infrastructure, and the basics of how cloud economics differ from running your own hardware. Conceptual, not technical.\n\nFocus areas:\n\n  * Benefits of cloud - elasticity, agility, pay-as-you-go, economies of scale\n  * AWS global infrastructure - Regions, Availability Zones, edge locations\n  * Cloud economics - CapEx vs OpEx, total cost of ownership\n  * The AWS Well-Architected Framework at a high level\n  * Migration and the cloud adoption basics\n\n\n\n###  Domain 2 - Security and Compliance (30%)\n\n> The second-largest domain. The shared responsibility model is the spine of it - know exactly where AWS's responsibility ends and yours begins. The rest is IAM basics and where to find compliance information.\n\nFocus areas:\n\n  * Shared responsibility model - what AWS secures vs what you secure\n  * IAM - users, groups, roles, policies, MFA, root account protection\n  * Security services - Shield, WAF, GuardDuty, Inspector, KMS at a high level\n  * Compliance - AWS Artifact, where audit reports come from\n  * Encryption in transit and at rest as concepts\n\n\n\n###  Domain 3 - Cloud Technology and Services (34%)\n\n> The largest domain and the widest. You need recognition-level knowledge of a long list of services - what each one is for, not how to configure it. Breadth beats depth here.\n\nFocus areas:\n\n  * Compute - EC2, Lambda, Elastic Beanstalk, ECS/EKS at a glance\n  * Storage - S3, EBS, EFS, Glacier and when each fits\n  * Databases - RDS, DynamoDB, Aurora, ElastiCache at a glance\n  * Networking - VPC, Route 53, CloudFront, the basics\n  * Management and monitoring - CloudWatch, CloudTrail, Organizations, Trusted Advisor\n  * Ways to access AWS - console, CLI, SDKs, infrastructure as code\n\n\n\n###  Domain 4 - Billing, Pricing, and Support (12%)\n\n> The smallest domain, but easy marks if you know the tools. Pricing models, the billing and cost tools, and the support plan tiers. Worth a focused hour - the distinctions are clean and frequently tested.\n\nFocus areas:\n\n  * Pricing models - On-Demand, Reserved, Spot, Savings Plans\n  * Cost tools - Cost Explorer, Budgets, Cost and Usage Report, Billing Conductor\n  * Support plans - Basic, Developer, Business, Enterprise and what each includes\n  * AWS Organizations and consolidated billing\n  * Trusted Advisor cost checks\n\n\n\n##  Services to know well\n\nFor CLF-C02 you need recognition-level knowledge - what each service is for and when you would reach for it, not how to configure it:\n\nService | Know this about it\n---|---\nEC2 | Virtual servers; the pricing models attach here\nS3 | Object storage, storage classes, durability\nRDS | Managed relational databases vs running your own\nLambda | Serverless compute, pay per execution\nVPC | Your private network boundary in AWS\nIAM | Users, groups, roles, policies, MFA\nCloudWatch | Monitoring, metrics, alarms, logs\nCloudTrail | API activity auditing (who did what)\nOrganizations | Multi-account management, consolidated billing\nTrusted Advisor | Best-practice checks across cost, security, performance\nCost Explorer / Budgets | Viewing spend vs alerting on spend\nWell-Architected Tool | Reviewing workloads against the six pillars\n\n##  Easy things to mix up\n\nThese are the distinctions the exam likes to probe. At this level, knowing the boundary between a pair is usually the whole question:\n\n  * **Shared responsibility model** - AWS secures the cloud (hardware, global infrastructure); you secure what you put in it (data, IAM, configuration). Managed services shift more onto AWS.\n  * **Regions vs Availability Zones vs edge locations** - a Region is a geographic area, an AZ is one or more data centres within it, an edge location serves CloudFront content closer to users.\n  * **Security groups vs network ACLs** - security groups are stateful and act at the instance; NACLs are stateless and act at the subnet.\n  * **On-Demand vs Reserved vs Spot** - On-Demand for flexibility, Reserved/Savings Plans for steady long-term workloads at a discount, Spot for interruptible workloads at the biggest discount.\n  * **Cost Explorer vs Budgets vs Cost and Usage Report** - Explorer visualises past spend, Budgets alerts on thresholds, the CUR is the detailed line-item export.\n  * **IAM users vs roles** - users are long-lived identities, roles are assumed temporarily and avoid long-lived credentials.\n  * **Support plans** - Basic is free, Developer adds business-hours email support, Business adds 24/7 and a fuller Trusted Advisor, Enterprise adds a TAM.\n  * **Trusted Advisor vs Well-Architected Tool** - Trusted Advisor runs automated best-practice checks; the Well-Architected Tool is a guided self-review against the framework.\n\n\n\n##  Resources\n\nCLF-C02 is well served by free, AWS-authored material. You do not need to spend much here.\n\n###  Essential\n\n  * Exam Guide (CLF-C02) - the syllabus. The domain breakdown and in-scope service list tell you exactly what is fair game.\n  * Exam Prep Enhanced Course (Skill Builder) - AWS's own guided prep, free, and enough to carry most people through on its own.\n  * **Tutorials Dojo practice exams (Jon Bonso)** - the most useful practice material for AWS exams. The explanations teach the concepts, not just the answers.\n  * Official Practice Exam (Skill Builder) - calibrate against AWS-authored questions before booking.\n\n\n\n###  Useful\n\n  * Exam Prep Standard Course (Skill Builder) - a lighter path than the enhanced course if you only need a refresher.\n  * **Stephane Maarek's CLF-C02 course** - if you prefer a video walk-through over reading, this is the canonical one.\n  * DigitalCloud cheat sheets - good for last-week revision once the concepts are in place.\n\n\n\n###  Skip if you are tight on time\n\n  * DigitalCloud resources page is handy as references, but they overlap with the official course and your practice exams. Skim, do not study cover to cover.\n\n\n\n##  Notes\n\n>   1. This is a breadth exam. Recognising what a service is for matters far more than any configuration detail - do not over-study any single service.\n>   2. The free Skill Builder enhanced course plus one set of practice exams is enough for most people. There is no need to buy multiple courses.\n>   3. Learn the shared responsibility model and the support plan tiers cold - they are reliable marks and the distinctions are clean.\n>   4. The score is scaled, so aim to clear 700 comfortably on practice exams rather than chasing a specific number.\n>\n",
  "title": "AWS Certified Cloud Practitioner (CLF-C02) Study Notes"
}