CompTIA Cloud+ (CV0-003) — Question 30

A cloud solutions architect needs to determine the best strategy to deploy an application environment in production, given the following requirements:
* No downtime
* Instant switch to a new version using traffic control for all users
Which of the following deployment strategies would be the BEST solution?

Answer options

• A. Hot site
• B. Blue-green
• C. Canary
• D. Rolling

Correct answer: B

Explanation

The blue-green deployment strategy allows for zero downtime and enables an instant switch to a new version by directing traffic from the old version to the new one seamlessly. In contrast, the canary deployment introduces changes to a small subset of users, which does not fulfill the requirement for an instant switch for all users. Rolling deployments gradually update instances, which may lead to downtime, and hot sites are more related to disaster recovery rather than deployment strategies.