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Efficient Processing for a Small VPS

HardSystem Design00:00
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Your question is Efficient Processing for a Small VPS. Take a moment with it on the right.

Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).

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Problem

We have a website that allows users to upload and download images instantly. Every action requires a small amount of processing. We are currently running the website on an virtual server. We are using a very small virtual server but keep seeing it is under-utilized. How can we make the processing more efficient?

Asked in the online_assessment stage. Explain how you would diagnose the under-utilization, choose an efficient Amazon architecture, and decide whether any ML-based routing or prediction is justified.