When managing performance and cost for EC2 instances across different families, the following steps are recommended:

Utilize AWS Compute Optimizer: This service provides recommendations for EC2 instances based on historical usage patterns and existing configurations. It helps identify optimal EC2 instance types and sizes that could deliver better performance and cost savings for your specific workload.

Implement Compute Savings Plans: After determining the most suitable instance types and sizes through Compute Optimizer, purchasing Compute Savings Plans can offer significant cost savings. These savings plans apply to any instance family across any region, providing flexibility and cost efficiency without upfront commitment to specific instance types.

AWS Documentation Reference:

Further details can be found in the AWS documentation on Compute Optimizer and Compute Savings Plans:

AWS Compute Optimizer

AWS Compute Savings Plans.