Aws Certified Devops Engineer - Professional Page

You would be wrong.

The difference between ELB Health Checks (at the TCP/HTTP level) and Auto Scaling Health Checks (EC2 status checks). If an EC2 instance is running but serving 500 errors, the ALB marks it unhealthy, but Auto Scaling won't replace it unless you configure it to honor ELB health. Domain 4: Monitoring, Logging, and Auditing (20%) You can't fix what you can't see. This domain pushes beyond basic dashboards into comprehensive observability . AWS Certified DevOps Engineer - Professional

The difference between CodeDeployDefault.AllAtOnce , CodeDeployDefault.HalfAtATime , and Canary10Percent5Minutes . Know when to use rolling vs. blue/green for stateful applications (spoiler: you usually add a pre-traffic hook to drain connections). Domain 2: Configuration Management and Infrastructure as Code (20%) You aren't just writing CloudFormation here. You are writing CloudFormation modules , StackSets , and CDK apps that deploy to 50 accounts. You would be wrong

StackSets deployment options. When you deploy to 10 accounts, do you use Service-Managed permissions (using AWS Organizations) or Self-Managed (using IAM roles)? Service-managed is almost always the answer for enterprise setups. Domain 3: Resilient Cloud Solutions (18%) DevOps isn't just about speed; it's about uptime. This domain asks: How do you deploy without downtime, and how do you recover when it breaks? Domain 4: Monitoring, Logging, and Auditing (20%) You

If you hold the AWS Developer or SysOps Administrator Associate certifications, you might look at the AWS Certified DevOps Engineer – Professional (DOP-C02) and think, “I just need to know a few more CI/CD commands.”