Normalization factor for dedicated EC2 instances - Amazon EC2 Reserved Instances and Other AWS Reservation Models

Normalization factor for dedicated EC2 instances

For size inflexible RIs, the normalization factor is always 1. The normalization factor doesn't apply to EC2 instances that do not have size flexibility. The sole purpose of the normalization factor is to provide an ability to match various EC2 instances to each other within a family so that you can exchange one type for another type. We do not support this use case for EC2 instances without size flexibility, hence normalization factor is not used and to keep our data model uniform across different EC2 use cases, we assign it an equivalent value of 1.