Microservices framework tried to bring a singularity to the application development that will help developers provide well defined and functioning software. Unikernel will help you realize it with even more accuracy avoiding the problems that can happen with the environment related failures that can happen on software. This can also prevent the overrun of CPU time when you need to pay by minute!.
Doesn’t it sound like a boxed s/w on cloud with it’s own OS?.
More here : http://wiki.xenproject.org/wiki/Unikernels