Isn&#x27;t it a feature of (some) unikernels, that you can fire one up to respond to some request, and tear it down, in milliseconds? If so, running an AWS Lambda-like service with all the isolation you get in a HVM seems desirable for some situations. The isolation provided by a Docker container might not be good enough. It&#x27;s a feature whose benefits, for some applications, might balance the debugging costs the article outlines.