**To purchase a Reserved Instance offering** The following ``purchase-reserved-instances-offering`` example command purchases a Reserved Instances offering, specifying an offering ID and instance count. :: aws ec2 purchase-reserved-instances-offering \ --reserved-instances-offering-id ec06327e-dd07-46ee-9398-75b5fexample \ --instance-count 3 Output:: { "ReservedInstancesId": "af9f760e-6f91-4559-85f7-4980eexample" } By default, the purchase is completed immediately. Alternatively, to queue the purchase until a specified time, add the following parameter to the previous call. :: --purchase-time "2020-12-01T00:00:00Z"