Creates a new role for your Amazon Web Services account. For more information about roles, see <a href="https://docs.aws.amazon.com/IAM/latest/UserGuide/WorkingWithRoles.html">IAM roles</a>. For information about quotas for role names and the number of roles you can create, see <a href="https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_iam-quotas.html">IAM and STS quotas</a> in the <i>IAM User Guide</i>.