A smooth Magento 2 migration requires careful planning to keep downtime to a minimum. The migration team should review the existing store and identify all important data, integrations, and custom features before starting the process. A staging environment should be used to test the migrated store without affecting the live website. The team should schedule the final data transfer during a period of low traffic. The team should also verify orders, payments, customer accounts, product data, and redirects before making the new store live.