Explore a blue/green deployment

At NovaTech, you're the release engineer for a checkout API running on 6 EC2 instances behind an Application Load Balancer. Use the deployment strategy explorer to compare how in-place and blue/green deployments work.

Step through each deployment strategy to see how traffic flows during the rollout. Pay attention to:

• How many instances serve traffic at each stage.
• What happens when a health check fails.
• How long rollback takes for each strategy.

Question: During a blue/green deployment, what happens when CodeDeploy triggers an automatic rollback?