You must choose a deployment strategy that minimizes deployment time and provides the fastest possible rollback. Which strategy meets these requirements?

Red/Black (also known as Blue/Green) deployment involves maintaining two identical production environments. One environment (Red/Blue) is active and serves user traffic, while the other (Black/Green) is idle. New code is deployed to the idle environment, tested, and then traffic is switched to it. This strategy minimizes deployment time because the new version is fully deployed and ready before traffic is cut over. Rollback is fast: if issues arise, traffic is simply switched back to the previous, stable environment. Rolling deployments update instances incrementally, which can take longer and make rollback more complex as multiple versions might be active. Big Bang deployments involve deploying all changes at once, leading to significant downtime and high risk, making rollback difficult. Canary deployments introduce changes to a small subset of users first, which is great for risk mitigation but doesn't offer the fastest deployment or rollback for the entire system compared to an immediate switch.