Implement a CI/CD pipeline using AMIs for the application and its configurations, deploying by replacing EC2 instances.

Utilize AWS Elastic Beanstalk with a secondary staging environment for the CI/CD pipeline, deploying by swapping staging and production environment URLs.

Employ AWS Systems Manager to re-provision infrastructure for each deployment, updating EC2 user data to fetch the latest code from S3, and using Route 53 weighted routing to direct traffic to the new environment.

Deploy application updates through an Auto Scaling event with prebuilt AMIs, adding new instances with updated AMIs and gradually removing instances with the previous AMI version using a configured termination policy.