AWS ECS Fargate Deployment

Help me deploy an application to AWS ECS Fargate.

Application details:
- Container image: [ECR repository URL]
- CPU/Memory requirements: [specify]
- Number of tasks: [desired count]
- Port mappings: [container ports]
- Environment variables: [list required vars]
- Secrets: [from Secrets Manager/Parameter Store]

Infrastructure requirements:
1. Task definition with proper IAM roles
2. ECS service with deployment configuration
3. Application Load Balancer setup
4. Target group with health checks
5. Auto-scaling policies
6. CloudWatch logging
7. VPC configuration (subnets, security groups)
8. Service discovery (optional)

Please provide:
- Terraform/CloudFormation templates
- IAM policies with least privilege
- Deployment commands
- Monitoring recommendations