<note> <p>You can no longer purchase Scheduled Instances.</p> </note> <p>Purchases the Scheduled Instances with the specified schedule.</p> <p>Scheduled Instances enable you to purchase Amazon EC2 compute capacity by the hour for a one-year term. Before you can purchase a Scheduled Instance, you must call <a>DescribeScheduledInstanceAvailability</a> to check for available schedules and obtain a purchase token. After you purchase a Scheduled Instance, you must call <a>RunScheduledInstances</a> during each scheduled time period.</p> <p>After you purchase a Scheduled Instance, you can't cancel, modify, or resell your purchase.</p>