A successful domain transfer between tenants typically involves preparing the destination tenant, migrating user data, and then switching the domain. Tools such as the SysInfo Office 365 Tenant Migration Tool can help move emails, documents, and other Microsoft 365 data before the domain migration begins. This approach reduces the chances of email interruptions and helps maintain business continuity throughout the process. More: https://www.sysinfotools.com/blog/move-domain-between-office-365-tenants/