On the other hand, AWS offers AMD machines and ARM machines in addition to the typical Intel stuff. If there was some new architecture that offered a 50% speedup, and all you had to do was recompile your code, I assume they'd support it in a heartbeat.
In the context of the article, the changes would by necessity be far more invasive than "recompile your code". The premise is that C cannot be an effective implementation language. A full rewrite would be required.
