You can now use AWS Identity and Access Management (IAM) Roles Anywhere to obtain temporary security credentials for workloads that run outside of AWS that are valid for up to 12 hours. You can use those temporary security credentials to sign and authenticate any AWS request. Previously, the temporary security credentials vended by IAM Roles Anywhere were valid for up to 1 hour. Now, you have the ability to optimize the number of CreateSession requests made to IAM Roles Anywhere by extending the credentials validity for a longer duration to meet your business needs. The duration can range from 15 minutes to 12 hours, with a default value of 1 hour.
Source:: Amazon AWS