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In ECS, scaling and auto scaling are important features to ensure that your containerized applications can handle varying workloads efficiently. ECS provides different mechanisms for ___ your container instances. To enable automatic scaling in ECS, you need to use Auto Scaling _ (ASGs) in Amazon EC2. ASGs provide the capability to automatically adjust the number of container instances based on ___. When configuring an ASG, you can define the minimum and maximum number of instances allowed, as well as scaling ___. ECS integrates with ASGs and can use them to automatically scale container instances in _ to workload changes.