AWS Certified Developer Associate DVA-C02 Practice Question
A development team needs to update a production application deployed on AWS Lambda to introduce significant changes. The team wants to ensure a cautious release, allowing a transition of only a small percentage of users to the new version while monitoring performance and error rates. If necessary, they need the ability to roll back quickly to the previous stable version. Which deployment strategy should they apply?
Deploy using a linear deployment strategy, increasing traffic every few minutes until 100% of the traffic is on the new version.
Apply an all-at-once deployment strategy by immediately shifting 100% of the traffic to the new Lambda function version.
Utilize a canary deployment strategy to introduce the new version to a limited percentage of users at the start and adjust the traffic based on monitoring results.
Implement a blue/green deployment strategy, where the new version is deployed alongside the old version and, after testing, the entire traffic is switched at once.
The canary deployment strategy allows the team to release the update to a small fraction of the users initially, with the option to increase the traffic incrementally to the new version or roll back if problems arise. This strategy aligns with their requirement for cautious release and quick rollback capabilities.
Linear and all-at-once deployment strategies do not provide the granular control over the traffic shifting required in this scenario. Blue/green deployment typically involves switching all at once between two separate environments, which does not match the team's need to gradually shift traffic.
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AWS Certified Developer Associate DVA-C02
Deployment
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