On AWS Firecracker – but there are other new micro-VM engines around, too Replacing a sort algorithm in the FreeBSD kernel has improved its boot speed by a factor of 100 or more… and although it's aimed at a micro-VM, the gains should benefit everyone. MicroVMs are a hot area of technology R&D in the last half decade or so. The core idea is a re-invention of some of concepts and technology that IB