With RIs, you can choose the type that best fits your applications needs.
Standard RIs: These provide the most significant discount (up to 75% off
On-Demand) and are best suited for steady-state usage
Convertible RIs: These provide a discount (up to 54% off On-Demand) and the
capability to change the attributes of the RI as long as the exchange results in the
creation of Reserved Instances of equal or greater value. Like Standard RIs, Convertible RIs
are best suited for steady-state usage
Scheduled RIs: These are available to launch within the time windows you
reserve. This option allows you to match your capacity reservation to a predictable
recurring schedule that only requires a fraction of a day, a week, or a month