**To move instances into standby mode**

This example puts the specified instance into standby mode::

   aws autoscaling enter-standby --instance-ids i-93633f9b --auto-scaling-group-name my-asg --should-decrement-desired-capacity
   
The following is example output::

  {
    "Activities": [
        {
            "Description": "Moving EC2 instance to Standby: i-93633f9b",
            "AutoScalingGroupName": "my-asg",
            "ActivityId": "ffa056b4-6ed3-41ba-ae7c-249dfae6eba1",
            "Details": {"Availability Zone": "us-west-2a"},
            "StartTime": "2015-04-12T15:10:23.640Z",
            "Progress": 50,
            "Cause": "At 2015-04-12T15:10:23Z instance i-93633f9b was moved to standby in response to a user request, shrinking the capacity from 2 to 1.",
            "StatusCode": "InProgress"
        }
    ]
  }
