Testing updates on a staging copy first, rather than directly on the live site, is the single habit that prevents most self-inflicted outages.
Clone, Don't Guess
An accurate staging environment mirrors your live site's configuration closely enough that testing there genuinely predicts real-world behavior.
Test the Whole Flow, Not Just the Change
Verify core functionality — checkout, forms, login — still works after the update, not just the specific feature the update targeted.
Have a Rollback Plan
Even with careful testing, keep a recent backup ready before applying any update to production, so a rollback is quick if something unexpected still slips through.
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