In the CloudFormation template, incorporate an AWS Config rule with the configuration file content in the InputParameters property, set the Scope to the EC2 Auto Scaling group, and include an AWS Systems Manager Resource Data Sync resource to monitor for configuration updates.

In the CloudFormation template, integrate an EC2 launch template resource containing the configuration file. Set up the cfn-init script to execute upon instance launch and the cfn-hup script to check for configuration updates.

In the CloudFormation template, include an EC2 launch template resource with the configuration file. Add an AWS Systems Manager Resource Data Sync resource to the template to periodically check for configuration updates.

In the CloudFormation template, use CloudFormation init metadata to store the configuration file content. Configure the cfn-init script to run at instance launch and the cfn-hup script to detect configuration updates.