What is Blue Green Deployment?

Blue-green deployment is a technique used in software development and deployment, where two identical production environments, typically referred to as "blue" and "green," are created. While one environment, say the blue environment, is serving live traffic, the other environment, the green environment, remains idle.

Once the green environment is fully deployed and tested, traffic is redirected from the blue environment to the green environment, making the green environment the new production environment. The blue environment is then kept idle, serving as a standby environment in case of any issues with the new environment.

The primary advantage of the blue-green deployment technique is that it allows for zero-downtime deployment of software updates or new releases. It also provides a quick and reliable way to roll back the deployment in case of any issues.

This technique is commonly used in environments that require high availability, such as web applications or e-commerce platforms, to ensure that the end-users experience minimal disruption during the deployment process.

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