Advanced AI Prompt for Incident Remediation via CloudWatch and AWS Lambda

Act as a Cloud Automation Engineer. Design a completely automated, human-free incident response workflow. When the critical CloudWatch Alarm [ALARM_NAME] is triggered (e.g., EC2 Status Check Failed), the architecture must instantly and autonomously invoke a specific [LAMBDA_REMEDIATION_SCRIPT] engineered to physically heal or replace the [TARGET_RESOURCE]. Provide the highly defensive Python/Boto3 code for the Lambda function responsible for executing the remediation (e.g., forcefully rebooting an instance, flushing a Redis cache, or recycling a blocked ENI). Provide the AWS CLI setup commands to securely bind the Alarm state change to the Lambda trigger via an SNS topic intermediary. Finally, map out a strict [FAILOVER_STRATEGY] detailing what the Lambda must do if its API calls to remediate the resource fail, ensuring the on-call engineer is subsequently paged.