What is the benefit of using managed instance groups with autoscaling?

The benefit of using managed instance groups with autoscaling lies in their ability to automatically adjust the number of running instances based on load. As demand fluctuates, such as during periods of high traffic or processing needs, the managed instance group can scale out by adding more instances. Conversely, during times of lower demand, it can scale in by reducing the number of instances. This dynamic adjustment helps optimize resource utilization and manage costs effectively, ensuring that applications maintain performance while minimizing waste.

The autoscaling feature is integrated with metrics from the application and the underlying infrastructure, which allows for responsive scaling in real-time. This means that applications can remain stable and responsive without requiring manual intervention. This automatic management aligns resources closely with current demand, leading to better performance and cost efficiency.