const options = {method: 'GET'};

fetch('https://api.example.com/v1/regions/global/iam/groups', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "success": true,
  "data": [
    {
      "id": "<string>",
      "name": "<string>",
      "source": "local",
      "description": "<string>",
      "memberCount": 123,
      "createdAt": "2023-11-07T05:31:56Z"
    }
  ]
}