An organization wants to use the approach often called “blue-green” to release updates. Which solution best meets the requirement of minimal disruption and a simple way to revert if problems arise?
Conduct updates directly in the active environment and restore it later if critical issues materialize
Create a parallel environment for modifications, verify it, and reroute users there while retaining the original for fallback
Establish a pilot area for testing in the same setup, then merge all changes after approval
Roll out revisions step by step within the current setup, halting if serious errors are found
Two identical sets of resources are maintained, with one processing traffic while the other is updated. After validation, requests switch to the updated set, providing minimal downtime and a quick rollback by returning to the previous set if problems appear. Methods involving live updates, phased rollouts, or replacing the environment on the fly do not offer the same streamlined reversion path.
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