Auto-scaling helps you to automatically manage your application capacity on the target environment. Auto-scaling is suitable for applications that experience extremely heavy workloads over a period of time.
The Bluemix Auto-Scaling service gives you the ability to dynamically adjust the capacity of an application instance. The Auto-Scaling service affects the application only; it does not have the ability to scale service instances for services such as SQLDB.
With the service, you can scale out (or scale in) your applications based on the resource allocations and SLA measurement.