&gt; Being able to build your unikernel (micro)services using legacy things and then swapping out certain services for clean-slate versions seems like a much more palatable approach. This is why unikernels fit so well with the microservices approach — you only have to re-write things one piece at a time if you choose to.<p>That&#x27;s kind of my point, in that worldview rump kernels are not really <i>the future</i> they&#x27;re a transitional phase bridging the present and the future.