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> Unlike Twilio, which runs on Amazon’s cloud, Plivo runs on dedicated servers. “We know that when you run things like that on Amazon’s cloud, the voice qualities degrades, and you cannot guarantee quality of service to customers,” explains Venky.

Care to elaborate?

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It is a known fact that for realtime voice encoding/decoding and mixing, virtual machines may not guarantee proper kernel timing, hence leading to issues in Voice quality.

Amazon instances are virtual in nature. Bare Metal Server work the best here.

This. I had an argument about this with the CTO of Twilio during my DevOps interview with them. Their excuse is that it works "good enough".

Can't expect much else when one of the founders comes from AWS.

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