CREATED FOR:
After you have completed your migration and thoroughly tested your new Magento 2 site, perform the following tasks:
Put Magento 1 in maintenance mode and permanently stop all Admin activities
Start Magento 2 cron jobs
Flush all Magento 2 cache types
Reindex all Magento 2 indexers
Change DNS and load balancers to point to the Magento 2 production hardware
