You can easily extend the maximum session duration for an IAM role to up to 12 hours using the IAM console or CLI. ... Once you increase the maximum session duration, users and applications assuming the IAM role can request temporary, short-term credentials that expire when the IAM role session expires.

How long do IAM roles last?

An IAM user that has been signed into the console for 10 hours (out of the default maximum of 12) switches to the role. The available role session duration is 2 hours. To learn how to view the maximum value for your role, see View the maximum session duration setting for a role later in this page.

How does IAM assume role work?

Returns a set of temporary security credentials that you can use to access AWS resources that you might not normally have access to. These temporary credentials consist of an access key ID, a secret access key, and a security token.