What does AWS Auto Scaling primarily ensure?

AWS Auto Scaling primarily ensures that the right number of Amazon EC2 instances are running to handle the load associated with your applications. This functionality allows organizations to maintain application performance and availability while efficiently managing costs. When demand for an application increases, Auto Scaling launches additional EC2 instances, ensuring that sufficient capacity is available to accommodate the user traffic. Conversely, when demand decreases, it scales back the instances to avoid unnecessary expenses.

The essence of Auto Scaling is to automatically adjust resources in response to real-time metrics and conditions, which optimizes resource utilization while guaranteeing that applications can respond effectively to fluctuating demand. This proactive scaling capability is integral to maintaining robust performance and cost-effectiveness in cloud environments.