Longer Format Resource IDs are Now Available in Amazon EC2

Posted on: Feb 12, 2018

In December 2017, we announced that Amazon EC2, Amazon EBS, and AWS Storage Gateway resources will have longer identifiers to support the ongoing growth of Amazon Web Services. Starting today, you can opt in to using longer IDs using APIs or the AWS Management Console.

From now until the end of June 2018, you can test your systems with the longer format and opt in when you are ready. After June 2018, all new resources will be created with longer IDs by default. Note that the new format will only apply to newly created resources; your existing resources won't be affected. We strongly recommend testing your systems and opting in to the longer ID format across all of your accounts before the end of June 2018. 

The current format is a resource identifier followed by an 8-character string. The new format will be the same resource identifier followed by a 17-character string. For example, today, your VPC has a resource identifier like “vpc-1234abc0”. After July 2018, a new VPC will be assigned an identifier like “vpc-1234567890abcdef0”. 

More information about affected resources, testing procedures, and more can be found on the EC2 FAQ page. If you have questions, contact AWS Support on the community forums and via AWS Support.