12-05 Regional and Zonal RI
When you purchase a RI, you determine the scope of the Reserved Instance.
The scope does not affect the price.
| Regional RI: purchase for a region | Zonal RI: purchase for an Availability Zone |
|---|---|
| does not reserve capacity | reserves capacity in the specified AZ |
| RI discount applies to instance usage in any AZ in the Region | RI discount applies to instance in the selected AZ (No AZ flexibility) |
| RI discount applies to instance usage within the instance family, regardless of size. Only supported on Amazon Linux/ Unix Reserved Instances with default tenacy. | No instance size flexibility. RI discount applies to instance usage for the specified instance type and size only. |
| You can queue purchases for regional RI |