Initiate a rolling restart of the Auto Scaling group for the green environment to install the new software on the green environment's EC2 instances. After the rolling restart is finished, employ an AWS CLI command to reconfigure the ALB to direct traffic to the green environment's target group.

Utilize an AWS CLI command to reconfigure the ALB to direct traffic to the green environment's target group. Subsequently, commence a rolling restart of the Auto Scaling group for the green environment to install the new software on the green environment's EC2 instances.

Modify the launch template to deploy the green environment's software on the blue environment's EC2 instances. Maintain the existing target groups and Auto Scaling groups for both environments. Execute a rolling restart of the blue environment's EC2 instances to apply the changes.

Begin a rolling restart of the Auto Scaling group for the green environment to install the new software on the green environment's EC2 instances. Once the rolling restart is complete, update the Route 53 DNS to redirect traffic to the green environment's endpoint on the ALB.