To find and purchase a Reserved Instance

1. If you are using SOAP, construct the following request:

   <DescribeReservedInstancesOfferings xmlns="http://ec2.amazonaws.com/doc/2009-10-31/"/>

2. If you are using Query, construct the following request:

   https://ec2.amazonaws.com/
   ?Action=DescribeReservedInstancesOfferings
   &...auth parameters...
   

3. View output similar to the following:

   <DescribeReservedInstancesOfferings xmlns="http://ec2.amazonaws.com/doc/2009-10-31//">
     <reservedInstancesOfferingsSet>
       <item>
         <reservedInstancesOfferingId>4b2293b4-5813-4cc8-9ce3-1957fc1dcfc8</reservedInstancesOfferingId>
         <instanceType>m1.small</instanceType>
         <availabilityZone>us-east-1a</availabilityZone>
         <duration>12</duration>
         <fixedPrice>0.00</fixedPrice>
         <usagePrice>0.00</usagePrice>
         <productDescription>m1.small offering in us-east-1a</productDescription>
       </item>
     </reservedInstancesOfferingsSet>
   </DescribeReservedInstancesOfferings>
   

4. To purchase a Reserved Instance using SOAP, construct a request similar to the following:

   <PurchaseReservedInstancesOffering xmlns="http://ec2.amazonaws.com/doc/2009-10-31/">
     <reservedInstancesOfferingId>4b2293b4-5813-4cc8-9ce3-1957fc1dcfc8</reservedInstancesOfferingId>
     <instanceCount>19</instanceCount>
   </PurchaseReservedInstancesOffering>

5. To purchase a Reserved Instance using Query, construct a request similar to the following:

   https://ec2.amazonaws.com/
   ?Action=PurchaseReservedInstancesOffering
   &OfferingId.1=offering-12345678&instanceCount.1=2
   &...auth parameters...
   

6. View output similar to the following:

   <PurchaseReservedInstancesOffering xmlns="http://ec2.amazonaws.com/doc/2009-10-31/">
      <reservedInstancesId>reservation-1001001</reservedInstancesId>
   </PurchaseReservedInstancesOffering>

7. To verify the purchase using SOAP, construct the following request:

   <DescribeReservedInstances xmlns="http://ec2.amazonaws.com/doc/2009-10-31/"/>

8. To verify the purchase using Query, construct the following request:

   https://ec2.amazonaws.com/
   ?Action=DescribeReservedInstances
   &...auth parameters...
   

9. View output similar to the following:

   <DescribeReservedInstances xmlns="http://ec2.amazonaws.com/doc/2009-10-31//">
     <reservedInstancesSet>
       <item>
         <reservedInstancesId>4b2293b4-5813-4cc8-9ce3-1957fc1dcfc8</reservedInstancesId>
         <instanceType>m1.small</instanceType>
         <availabilityZone>us-east-1a</availabilityZone>
         <duration>12</duration>
         <usagePrice>0.00</usagePrice>
         <fixedPrice>0.00</fixedPrice>
         <instanceCount>19</instanceCount>
         <productDescription>m1.small offering in us-east-1a</productDescription>
         <state>Active</state>
       </item>
     </reservedInstancesSet>
   </DescribeReservedInstances>