What is the term for selecting the optimal Amazon EC2 instance types and sizes to meet performance and capacity needs while minimizing cost?

Rightsizing is the process of analyzing resource utilization and performance metrics to choose the most appropriate Amazon EC2 instance types and sizes. The goal is to match the instance's capacity to the workload's actual requirements, thereby optimizing both performance and cost. Over-provisioning leads to unnecessary expenses, while under-provisioning can cause performance issues. Auto Scaling automatically adjusts the number of instances based on demand, but it doesn't inherently optimize the instance type or size. Storage tiering involves moving data between different storage classes based on access patterns and cost, which is unrelated to EC2 instance optimization. Instance scheduling involves starting and stopping instances at specific times to save costs, but it doesn't address the fundamental sizing of the instances themselves.