1. **Subnets:** ECS Tasks can run in private or public subnets. Tasks must have [network access](https://aws.amazon.com/premiumsupport/knowledge-center/ecs-pull-container-api-error-ecr/) to Amazon ECR to pull images.
1. **Consul Servers:** You can use your own Consul servers or run servers inside ECS on Fargate using the `dev-server` Terraform module. The is a development/testing only server that does not support persistent storage.
1. **ACL Controller:** If you are running a secure Consul installation, configure the ACL controller.