A recent advertisement campaign has increased traffic to an e-commerce application that is hosted within a public cloud environment. Customers are reporting that it takes too long to load their pages and submit orders. A cloud administrator looks at the metrics from the environment and sees high utilization of the CPU and memory resources. The cloud provider offers several preconfigured sizes for server template: x-small, small, medium, large, x-large, and 2x-large. Given an expected increase in workload, which of the following is the BEST solution to improve application performance?

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A. Change the server template size for Inxpc003 to 2x-large. Changing the server template to 2x-large is vertical scaling, which directly increases the CPU and memory resources allocated to the bottlenecked instance, addressing the root cause of poor performance under increased load.

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B. Provision additional Inxpc servers using the 2x-large template. Provisioning additional servers is horizontal scaling and aids load distribution, but does not resolve the per-instance resource saturation if traffic is not balanced across the new instances.

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C. Add memory to Inxpc002, Inxpc003, and Inxpc003. Cloud virtual machines do not support adding hardware resources directly to a running instance - resource changes require modifying the instance template or size.

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D. Change the role of Inxw001 from web to application. Reassigning the web server role to an application role does not add compute resources and does not address the underlying CPU and memory constraint.

A recent advertisement campaign has increased traffic to an e-commerce application that is hosted within a public cloud environment. Customers are reporting that it takes too long to load their…

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