Introduction
You don’t need to spend hundreds of dollars to prepare for the AWS Certified DevOps Engineer – Professional (DOP-C02) exam. AWS provides extensive free documentation, whitepapers, and tools that cover everything on the exam.
This guide organizes the best free resources by exam domain so you can build a structured study plan without spending on courses upfront.
Official AWS Exam Resources
Exam Guide (Start Here)
The official DOP-C02 exam guide is your roadmap. It lists every topic, skill, and AWS service that can appear on the exam. Download it from the AWS Certification page and use it as a checklist throughout your preparation.
The exam guide breaks down:
- All five domains with percentage weights
- Specific task statements within each domain
- AWS services and features in scope
How to use it: Print it out. As you study each topic, check it off. Any unchecked items before exam day are your remaining gaps.
Sample Questions
AWS provides a set of official sample questions for DOP-C02. These give you a feel for question format, difficulty level, and how AWS phrases scenarios. They’re limited in quantity but useful for understanding what the exam expects.
AWS Skill Builder (Free Tier)
AWS Skill Builder offers free digital training courses. Relevant courses for DOP-C02 include:
- Exam Prep: AWS Certified DevOps Engineer – Professional — Official exam preparation course covering all domains
- DevOps Engineering on AWS — Foundational DevOps concepts on AWS
- CI/CD on AWS — Focused training on pipeline services
The free tier has limited content compared to the paid subscription, but the exam prep course alone is worth completing.
AWS Free Tier Account
An AWS Free Tier account gives you 12 months of free access to many services used on the DOP-C02 exam:
- EC2: 750 hours/month of t2.micro or t3.micro
- S3: 5 GB of storage
- CloudWatch: 10 custom metrics, 10 alarms, 1 million API requests
- Lambda: 1 million requests/month
- CodeBuild: 100 build minutes/month
- CodePipeline: 1 free pipeline
- CloudFormation: Free (you pay only for provisioned resources)
- Systems Manager: Free for most features
- Config: Free for first rule evaluations (limited)
This is enough to complete most hands-on labs without spending money.
Resources by Exam Domain
Domain 1: SDLC Automation (22%)
AWS Documentation:
- AWS CodePipeline User Guide — Covers pipeline concepts, stages, actions, and integrations
- AWS CodeBuild User Guide — Build specifications, environment variables, and caching
- AWS CodeDeploy User Guide — Deployment groups, strategies, lifecycle events, and rollback
- AWS CodeCommit User Guide — Repository management and triggers
Whitepapers:
- Practicing Continuous Integration and Continuous Delivery on AWS — Essential reading. Covers CI/CD architecture patterns, deployment strategies, and AWS service selection. This whitepaper alone covers a significant portion of Domain 1.
Hands-On Labs (Free with AWS account):
- Build a CodePipeline from CodeCommit to CodeDeploy
- Configure CodeBuild with a buildspec.yml file
- Implement blue-green deployment with CodeDeploy and EC2
- Set up canary deployments for Lambda functions
- Create pipeline notifications with SNS
Domain 2: Configuration Management and IaC (17%)
AWS Documentation:
- AWS CloudFormation User Guide — Templates, stacks, change sets, and best practices
- CloudFormation Template Reference — Complete resource type reference
- AWS CloudFormation Best Practices — Stack organization, change management, and security
- AWS Systems Manager Parameter Store — Configuration and secrets management
Whitepapers:
- Infrastructure as Code — Covers IaC principles, patterns, and AWS implementation approaches
Hands-On Labs:
- Write a CloudFormation template that creates a VPC with public and private subnets
- Create a nested stack architecture
- Use change sets to preview and execute stack updates
- Implement stack policies to protect critical resources
- Set up drift detection for a CloudFormation stack
- Manage parameters with Systems Manager Parameter Store
Domain 3: Monitoring, Logging, and Remediation (26%)
AWS Documentation:
- Amazon CloudWatch User Guide — Metrics, alarms, dashboards, and Logs Insights
- CloudWatch Logs Insights Query Syntax — Essential for understanding the query language tested on the exam
- AWS X-Ray Developer Guide — Tracing concepts, service maps, and instrumentation
- Amazon EventBridge User Guide — Event patterns, rules, and targets
Whitepapers:
- Monitoring and Observability (Well-Architected Labs) — Best practices for building observable systems
Hands-On Labs:
- Create a CloudWatch dashboard with custom metrics
- Write CloudWatch Logs Insights queries (practice the syntax until it’s natural)
- Set up CloudWatch alarms with SNS notifications
- Configure X-Ray tracing for a sample application
- Build an EventBridge rule that triggers a Lambda function on EC2 state changes
- Create a composite alarm from multiple individual alarms
Domain 4: Policies and Standards Automation (20%)
AWS Documentation:
- AWS Config Developer Guide — Rules, conformance packs, and remediation
- AWS Config Managed Rules — List of all built-in rules and what they evaluate
- AWS CloudTrail User Guide — Trail configuration, log file integrity, and insights
- AWS Secrets Manager User Guide — Rotation configuration and multi-user strategies
- AWS Organizations User Guide — SCPs and organizational policies
Whitepapers:
- Security Pillar – AWS Well-Architected Framework — Security automation principles and patterns
- AWS Security Best Practices — Comprehensive security guidance
Hands-On Labs:
- Enable AWS Config and create managed rules (s3-bucket-encryption, iam-password-policy)
- Set up automatic remediation for a Config rule using SSM Automation
- Create a CloudTrail trail and query events with CloudWatch Logs Insights
- Configure Secrets Manager rotation for an RDS database
- Write and apply a Service Control Policy in AWS Organizations (use a test account)
Domain 5: Incident and Event Response (15%)
AWS Documentation:
- AWS Systems Manager Automation — Automation documents and runbooks
- Auto Scaling User Guide — Scaling policies, lifecycle hooks, and instance refresh
- AWS Systems Manager OpsCenter — Operational insights and incident tracking
Whitepapers:
- Operational Excellence Pillar – AWS Well-Architected Framework — Incident management, runbooks, and operational improvement
Hands-On Labs:
- Create a Systems Manager Automation document for a common operational task
- Configure Auto Scaling lifecycle hooks
- Build an automated remediation workflow (EventBridge → Lambda → action)
- Set up OpsCenter for tracking operational issues
- Practice scaling policies (target tracking, step scaling)
AWS Whitepapers Priority List
Not all whitepapers are equally valuable for DOP-C02. Prioritize these:
| Priority | Whitepaper | Relevance |
|---|---|---|
| 1 | Practicing CI/CD on AWS | Directly covers Domain 1 |
| 2 | Operational Excellence Pillar | Covers Domains 3 and 5 |
| 3 | Security Pillar | Covers Domain 4 |
| 4 | Infrastructure as Code | Covers Domain 2 |
| 5 | Monitoring and Observability | Covers Domain 3 |
Read the top 3 thoroughly. Skim the rest for key concepts.
AWS Documentation Reading Strategy
AWS documentation is comprehensive but massive. Don’t try to read everything. Use this strategy:
For Each Key Service:
- Read the “What is” page — Understand the service’s purpose and core concepts
- Read the “Getting Started” tutorial — Do the tutorial hands-on in your AWS account
- Read the “Best Practices” section — These directly map to exam questions
- Read the FAQ page — Contains service limits, supported features, and common questions that appear on the exam
- Skip the API reference, SDK integration guides, and pricing details (unless relevant to a specific question pattern)
Key FAQ Pages for DOP-C02
Service FAQ pages are gold mines for exam preparation:
- CodePipeline FAQ — Pipeline limits, supported source providers, and cross-region behavior
- CodeDeploy FAQ — Supported compute platforms, deployment configurations, and rollback behavior
- CloudFormation FAQ — Stack limits, supported resource types, and change set behavior
- CloudWatch FAQ — Metric retention, alarm evaluation, and Logs Insights capabilities
Free Hands-On Lab Strategy
Structure your hands-on practice to maximize learning while minimizing AWS costs:
Week 1-2: CI/CD Pipeline
Build a complete pipeline that:
- Pulls code from a repository
- Runs tests with CodeBuild
- Deploys to a staging environment
- Requires manual approval
- Deploys to production with blue-green deployment
Cost: Free with Free Tier (1 free pipeline, 100 free build minutes)
Week 3-4: Infrastructure as Code
Write CloudFormation templates for:
- A VPC with public/private subnets and NAT gateway
- An Auto Scaling group with an Application Load Balancer
- An RDS instance with automated backups
Cost: Free (CloudFormation itself is free; keep resources running briefly)
Week 5-6: Monitoring and Automation
Set up:
- CloudWatch dashboards with custom metrics
- Alarms that trigger Lambda functions
- EventBridge rules for EC2 state changes
- X-Ray tracing on a sample application
Cost: Mostly free within Free Tier limits
Week 7-8: Compliance and Incident Response
Configure:
- AWS Config with managed rules
- Automatic remediation actions
- Systems Manager Automation documents
- Auto Scaling lifecycle hooks
Cost: Minimal (Config charges per rule evaluation, but low volume is inexpensive)
Remember: Delete all resources after each lab session to avoid charges.
Study Schedule Using Free Resources
| Week | Focus | Primary Free Resources |
|---|---|---|
| 1-2 | CI/CD Automation | CodePipeline/CodeBuild/CodeDeploy docs + CI/CD whitepaper |
| 3-4 | Infrastructure as Code | CloudFormation docs + IaC whitepaper |
| 5-6 | Monitoring & Logging | CloudWatch/X-Ray/EventBridge docs + Operational Excellence whitepaper |
| 7-8 | Policies & Compliance | Config/CloudTrail/Secrets Manager docs + Security whitepaper |
| 9 | Incident Response | Systems Manager docs + hands-on automation labs |
| 10 | Review & Practice | Revisit weak areas + practice exams |
When Free Resources Aren’t Enough
Free resources cover the knowledge required to pass DOP-C02. However, they have gaps:
- No structured practice exams. AWS sample questions are too few to simulate the real exam experience.
- No domain-specific scoring. Without practice exams that track your performance by domain, it’s hard to identify weak areas.
- No explanation of wrong answers. Documentation teaches you concepts but doesn’t explain why one approach is better than another in a specific scenario.
This is where quality practice exams become essential. Sailor’s DOP-C02 mock exam bundle fills these gaps with hundreds of scenario-based questions, detailed explanations, and domain-level performance tracking — helping you validate whether your free resource study has been effective.
Related Resources
- DOP-C02 Exam Guide 2026 — Complete exam format and domain breakdown
- 10-Week DOP-C02 Study Plan — Structured preparation schedule
- DOP-C02 Prerequisites — What you need before starting
- DOP-C02 Exam Cost — Full cost breakdown