MLA-C01 Question 353
Single answerAn e-commerce company is deploying a new version of its recommendation engine hosted on Amazon SageMaker. The team wants to minimize downtime and gradually shift traffic to the new version to monitor its performance before fully switching over. If issues are detected, they need to roll back quickly to the previous version. Which deployment strategy is the most suitable for their requirements?
- A
Blue/Green Deployment
- B
Canary Deployment
- C
All-at-Once Deployment
- D
Linear Deployment
Show answer and explanation
Correct answer: B
Explanation
Canary Deployment is the most suitable strategy for scenarios where gradual traffic shifting and real-time performance monitoring of a new version are required, with the ability to quickly roll back to the previous version if issues arise. Other strategies either don't allow gradual shifting or lack quick rollback capabilities.
- A. Incorrect.
Blue/Green Deployment involves creating a completely separate environment for the new version and switching traffic only after testing. While it allows for rollback, it doesn't align with the requirement of gradually shifting traffic.
- B. Correct.
Canary Deployment gradually shifts a small percentage of traffic to the new version while monitoring its performance. This approach supports gradual traffic shifting and quick rollback, making it the most suitable choice.
- C. Incorrect.
All-at-Once Deployment immediately shifts all traffic to the new version, which can lead to significant downtime and does not allow gradual traffic shifting or quick rollback if issues arise.
- D. Incorrect.
Linear Deployment gradually shifts traffic to the new version in equal increments over a predefined period. While it supports gradual traffic shifting, it doesn't allow for immediate rollback if issues occur.