For a high-risk utility billing Lambda, the team wants only ten per…

Question

For a high-risk utility billing Lambda, the team wants only ten percent of API traffic on the new version for fifteen minutes before a full shift. Which deployment strategy should they configure?

Accepted Answer

A canary deployment that shifts a small percentage of traffic to the new Lambda version, monitors, then completes the shift. — Canary is a taste-test: ten percent of citizens hit the new Lambda for a bit while you watch the meters. If the taste is bad, you never serve the whole city. All-at-once is the opposite of that sip.

Answer

An all-at-once alias update with no partial traffic period.

Answer

A rolling EC2 instance refresh that ignores Lambda versions.

Answer

A blue/green cutover that moves one hundred percent of traffic immediately with no canary interval.

For a high-risk utility billing Lambda, the team wants only ten percent of API traffic on the new version for fifteen minutes before a full shift. Which deployment strategy should they configure?

Short Explanation

Full Explanation