**To create a service-linked role**

The following ``create-service-linked-role`` example creates a service-linked role for the specified AWS service and attaches the specified description. ::

    aws iam create-service-linked-role --aws-service-name lex.amazonaws.com --description "My service-linked role to support Lex"

Output::
  {
      "Role": {
          "Path": "/aws-service-role/lex.amazonaws.com/",
          "RoleName": "AWSServiceRoleForLexBots",
          "RoleId": "AROA1234567890EXAMPLE",
          "Arn": "arn:aws:iam::1234567890:role/aws-service-role/lex.amazonaws.com/AWSServiceRoleForLexBots",
          "CreateDate": "2019-04-17T20:34:14+00:00",
          "AssumeRolePolicyDocument": {
              "Version": "2012-10-17",
              "Statement": [
                  {
                      "Action": [
                          "sts:AssumeRole"
                      ],
                      "Effect": "Allow",
                      "Principal": {
                          "Service": [
                              "lex.amazonaws.com"
                          ]
                      }
                  }
              ]
          }
      }
  }  

For more information, see `Using Service-Linked Roles`_ in the *IAM User Guide*

.. _`Using Service-Linked Roles`: https://docs.aws.amazon.com/IAM/latest/UserGuide/using-service-linked-roles.html