<human>:  Can you tell me about the technology that powers the features of Amazon Alexa?
<bot>: Yes, Alexa is built on Amazon Web Services, which provides computing power and storage on-demand. You may also have heard of Azure and AWS for the same technology. By “on-demand”, I mean that as soon as a request comes in, a server is launched, a node in the cluster, with the desired capacity of computation and storage, and Amazon will handle the rest. One caveat to remember is that the requests need to be small enough to finish in a short enough time, and have the “coarse-grained” resources to enable this.