Which cloud concept is exemplified by using AWS Compute Optimizer to choose appropriate instance types?

Rightsizing is the process of matching instance types and sizes to your workload performance and capacity needs at the lowest possible cost. AWS Compute Optimizer analyzes historical utilization metrics to recommend optimal AWS resources, directly exemplifying rightsizing by helping you select the most appropriate instance types. Security validation refers to ensuring the security of your cloud resources, which is a different concept. Elasticity is the ability to automatically scale resources up or down based on demand, while global reach refers to the ability to deploy applications in multiple geographic regions. Neither of these accurately describes the act of choosing the correct instance type for a given workload.