Posted On: Sep 24, 2019

We recently announced Amazon EC2’s vCPU-based On-Demand Instance limits to simplify the limit management experience for EC2 customers. Starting today, you can opt in to using vCPU-based limits from the Amazon EC2 console.

On-Demand Instance usage toward the vCPU-based limit is measured in terms of the number of virtual central processing units (vCPUs) attached to your running instances, making it easier to take advantage of Amazon EC2’s broad selection of Instance Types. In addition, there are only five different On-Demand Instance limits—one limit that governs the usage of standard instance families such as A, C, D, H, I, M, R, T, and Z, and one limit per specialized instance family for FPGA (F), graphic-intensive (G), general purpose GPU (P), and special memory optimized (X) instances. You can continue to view and manage your limits from the Amazon EC2 console and the Service Quotas console. With Amazon CloudWatch metrics integration, you can also monitor EC2 usage against limits as well as configure alarms to warn about approaching limits. 

From now until October 24, 2019, you can opt in to vCPU-based limits at a time of your choosing and familiarize yourself with the new On-Demand Instance limits experience. Starting October 24, 2019, all accounts will switch to vCPU-based limits regardless of the account’s opt-in status. 

The vCPU-based On-Demand Instance limits are available in all commercial AWS Regions except the AWS China (Beijing and Ningxia) Regions. For more information about EC2 On-Demand Instance limits, visit our EC2 FAQ page. If you have any questions, contact the AWS support team on the community forums and via AWS Support.