Here's a checklist that you need to follow before taking your store live:

  1. System Requirements
  2. Latest Version
  3. Prepare HTML Head
  4. Shipping Methods
  5. Payment Methods
  6. Taxes
  7. Cron (Scheduled Tasks)
  8. Correct Store Information
  9. Change Admin URL and Secure Passwords
  10. Clear Test Data
  11. Enable Varnish Cache
  12. Javascript and CSS Optimization
  13. Images Optimization
  14. Email Templates
  15. CMS Pages
  16. 404 Error Page For Your Magento Store
  17. Analytics Google



To learn about the implementation of this checklist, here's a full guide: Magento 2 Launch Checklist

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