Scenario: Restrict the user or role bound to the specified label (the label key is project and the label value is short video service ) to access the site-wide acceleration service.
Policy example:

{ 
  "Statement": [ 
    { 
      "Effect": "Allow", 
      "Action": [ 
        "dcdn:*" 
      ], 
      "Resource": [ 
        "*" 
      ], 
      "Condition":{ 
          "StringEquals":{ 
                  "Volc: PrincipalTag/project": "Short video service" 
          } 
      } 
    } 
  ] 
}

For details of the condition key, please refer to the Condition Use Instructions