Amazon EC2 Reserved Instances and Other AWS Service Reservation Models
AWS Whitepaper

Maximize Discounts by Standardizing Instance Type

By standardizing the instance types that your organization uses, you can ensure that deployments match the characteristics of your reservations to maximize your discounts. Standardization maximizes utilization and minimizes the level of effort associated with management of reservations. Two services that can help you standardize your instances are:

  • AWS Config – Enables you to assess, audit, and evaluate the configurations of your AWS resources. AWS Config continuously monitors and records your AWS resource configurations and lets you automate the evaluation of recorded configurations against desired configurations.

  • AWS Service Catalog – Lets you create and manage catalogs of IT services that are approved for use on AWS. These IT services can include everything from virtual machine images, servers, software, and databases to complete multi-tier application architecture.