About This Domain
Domain 3 — Cloud Technology and Services — accounts for 34% of the CLF-C02 certification exam. This domain evaluates your understanding of core compute: ec2, lambda, elastic beanstalk, lightsail, ecs, eks, and fargate, core storage: s3, ebs, efs, fsx, s3 glacier, backup, and storage gateway, core databases: rds, aurora, dynamodb, elasticache, redshift, documentdb, and neptune, and related concepts. Domain 3 is the largest CLF-C02 domain and tests recognition of core AWS services, deployment models, operating methods, and service use cases. To pass this section you need practical knowledge of how these services and patterns work together in real-world architectures.
What You'll Be Tested On
- Core compute: EC2, Lambda, Elastic Beanstalk, Lightsail, ECS, EKS, and Fargate
- Core storage: S3, EBS, EFS, FSx, S3 Glacier, Backup, and Storage Gateway
- Core databases: RDS, Aurora, DynamoDB, ElastiCache, Redshift, DocumentDB, and Neptune
- Networking and content delivery: VPC, Route 53, CloudFront, Direct Connect, VPN, PrivateLink, and Transit Gateway
- Monitoring, management, integration, serverless, analytics, AI/ML, and migration service categories
Key AWS Services in This Domain
Study Strategy for Domain 3
At 34% of the exam, this is the highest-weighted domain — invest proportionally more study time here. Focus on hands-on labs and scenario-based questions. Aim to answer at least 80% of Domain 3 questions correctly in practice tests before sitting the real exam.
Exam Tips for Domain 3
Most CLF service questions ask for service selection, not deep configuration.
Learn the primary purpose of each service: compute, storage, database, networking, security, monitoring, or billing.
S3 is object storage, EBS is block storage, and EFS is file storage.
Route 53 is DNS, CloudFront is CDN, and VPC is private networking.
Frequently Asked Questions
How many questions on the CLF-C02 exam come from Domain 3?
Domain 3 (Cloud Technology and Services) makes up 34% of the CLF-C02 exam. The exam has 65 scored questions, so approximately 22 questions will come from this domain.
What services should I focus on for Domain 3?
The key services for this domain include Compute, EC2, Lambda, S3, RDS, DynamoDB, VPC, CloudFront, Route 53, CloudWatch, App Integration, AI & ML. Make sure you understand how each service works, its use cases, and how they integrate with one another.
How should I prepare for Cloud Technology and Services questions?
Start by reviewing the key topics listed above, then practice with domain-specific questions. Focus on understanding real-world scenarios rather than memorizing facts. Use our practice quizzes to test your knowledge and review explanations for any questions you get wrong.
What's the best order to study the CLF-C02 domains?
Many candidates start with the highest-weighted domains first. For the CLF-C02 exam, the domains in order of weight are: Cloud Concepts (24%), Security and Compliance (30%), Cloud Technology and Services (34%), Billing, Pricing, and Support (12%). However, start with whichever domain aligns best with your existing experience.
Practice Domain 3 Questions
Test your knowledge of Cloud Technology and Services with practice questions from our CLF-C02 question bank.
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