Route My Domains Through Salesforce Edge (Update, Enforced)
Where: This change applies to Lightning Experience and Salesforce Classic in Professional, Enterprise, Performance, Unlimited, and Database.com editions.
When: This update is enforced in Summer ’20. To get the major release upgrade date for your instance, go to Trust Status, search for your instance, and click the maintenance tab.
Who: Only customers with a My Domain or Custom Domain. Public Cloud and Salesforce Government Cloud orgs are currently excluded from the move to Salesforce Edge.
Why: This update informed customers with a deployed My Domain or Custom Domain of the upcoming change and allowed them to enroll in the pilot.