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Microservices are independent services that are developed, deployed, and maintained separately. Which of the following BEST justifies the use of this application architecture?
Correct Answer: A
Comprehensive and Detailed Explanation From Exact Extract: SRE supports microservices architecture because it improves reliability by reducing blast radius, allowing independent deployments, and enabling scalable autonomous teams. The SRE Book notes: "Microservices enable teams to independently iterate and improve reliability without the constraints of large monolithic systems." (SRE Book - Distributed Systems). One of the strongest reasons to adopt microservices is modernizing and refactoring large legacy monoliths, allowing them to be broken into independently deployable, maintainable components. Option A is therefore the best justification. Options B, C, and D may involve architectural choices, but they do not explain why microservices are the preferred architecture for reliability and scalability. Thus, A is correct. References: Site Reliability Engineering, Chapters on Distributed Systems and Microservice Reliability Patterns.