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Blue/green deployment is a deployment strategy used in software development and IT operations to minimize downtime and ensure a smooth transition during application updates. The process involves running two identical production environments, a “blue” environment, and a “green” environment, at the same time. When it’s time to deploy a new version of the application, the new version is first tested and deployed to the “green” environment, while the “blue” environment continues to serve live traffic. Once the new version has been validated and is confirmed to be working properly, the live traffic is switched over to the “green” environment, making it the new “blue” environment, and the old “blue” environment is decommissioned. This approach provides a quick rollback option in case of issues with the new version, as the old environment is still available.