Describe deployment strategies: blue-green, canary.

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Multiple Choice

Describe deployment strategies: blue-green, canary.

Blue-green and canary deployments are two ways to reduce release risk by separating how you expose updates to users. In a blue-green setup, you maintain two production environments that are kept in sync. When you’re ready, you switch all traffic from the current environment to the new one, making the update feel immediate to users. If problems show up, you flip back to the original environment, giving a fast rollback and minimal downtime. Canary deployment, on the other hand, releases the new version to a small subset of users first. You watch real-world performance and behavior, gradually increasing the exposure as confidence grows. If issues appear, you halt the rollout and can stop sending more users to the new version while still serving the rest on the old version. So the statement that best matches both ideas is that blue-green swaps environments and canary gradually releases to a subset of users to test. The other descriptions mischaracterize blue-green as mere hot standby, suggest canary replaces all users at once, or claim these approaches aren’t related to deployment strategies.

Blue-green and canary deployments are two ways to reduce release risk by separating how you expose updates to users. In a blue-green setup, you maintain two production environments that are kept in sync. When you’re ready, you switch all traffic from the current environment to the new one, making the update feel immediate to users. If problems show up, you flip back to the original environment, giving a fast rollback and minimal downtime.

Canary deployment, on the other hand, releases the new version to a small subset of users first. You watch real-world performance and behavior, gradually increasing the exposure as confidence grows. If issues appear, you halt the rollout and can stop sending more users to the new version while still serving the rest on the old version.

So the statement that best matches both ideas is that blue-green swaps environments and canary gradually releases to a subset of users to test. The other descriptions mischaracterize blue-green as mere hot standby, suggest canary replaces all users at once, or claim these approaches aren’t related to deployment strategies.

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