EC2 instance type

Hello, here both t3.xlarge and t3.2xlarge instances are belongs to same instance class family (t3). Selection of instance class is depending upon your workload and requirement.

Cost wise t3.xlarge is less expensive than t3.2xlarge. You can check more details from AWS pricing page. RI (Reserved instance) are also good option to save the cost on any instance type for long term commitment.

Resiliency wise – t3.2xlarge instance has more (double) CPU, memory & network compared to t3.xlarge which is helpful for larger workload.

In summary, for smaller workload you can consider t3.xlarge instance to save the cost compared to t3.2xlarge. but always consider t3.2xlarge has more resources like CPU, memory with higher cost.

AWS Pricing - https://aws.amazon.com/pricing/ EC2 Reserved Instances - https://aws.amazon.com/ec2/pricing/reserved-instances/