Update references to legacy Salesforce URLs before redirections stop in Winter ’25. Give users access to manage custom domains with a new, more targeted user permission. And scratch orgs on Salesforce Edge Network use partitioned domains.

  • Update References to Your Previous Salesforce Domains
    Prevent disruption for your customers and end users when the temporary redirection of legacy Salesforce domains ends. To help your users update outdated links and bookmarks, show a brief message during the redirections that provides the updated URL. Then update references to your previous Salesforce URLs, including site URLs and URLs that contain your Salesforce instance but not your My Domain name.
  • Identify Redirections for Your Instanced My Domain Hostnames
    Identify your hard-coded instanced My Domain URLs to update before those redirections end in Winter ’25. To help you, a field on the Hostname Redirects event type now tracks redirections for these URLs.
  • Grant Specific Permission to Manage Custom Domains
    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.
  • Maximize Availability with Partitioned Domains in More Orgs
    To maximize the availability of your orgs, My Domain uses partitioned domains for new Developer Edition orgs, patch orgs, scratch orgs, demo orgs, and Trailhead Playgrounds. Partitioned domains include a word related to the org type so that Salesforce can gradually roll out service-delivery changes. This feature is enabled by default in new qualifying orgs, and sandboxes with enhanced domains are always partitioned. To ensure continued access to all your orgs, update your allowlists for the new domains. To include your existing org in the Salesforce deployment schedule for that org type, enable and deploy partitioned domains.

https://help.salesforce.com/s/articleView?id=release-notes.rn_security_domains.htm&release=250&type=5

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