Permit users to add, edit, and delete custom domains and custom URLs without granting them broader admin privileges. A custom domain serves your Experience Cloud sites or Salesforce Sites on a domain that you own, such as https://www.example.com. Previously, to manage custom domains, you assigned the Customize Application user permission.
Where: This change applies to Lightning Experience and Salesforce Classic in Enterprise, Performance, and Unlimited editions. Custom domains are also available in Professional Edition with Marketing Cloud Account Engagement (Pardot).
How: Add the new Custom Domain Management user permission to a new or existing permission set. Then assign the permission set to the users who require this permission.