...
- Convertible Reserved Instances
- Can be exchanged for Convertible Reserved Instances with different instance families, platform, tenancy, or scope during the termThey allow you to change the instance family and other parameters associated with a Reserved Instance at any time. For example, you can convert C3 RIs to C4 RIs to take advantage of a newer instance type, or convert C4 RIs to M4 RIs if your application turns out to need more memory.
- Three year term
- Can reserve capacity (locked into one availability zone) or be regional (can launch in any AZ within the region)
...