To just that. What of the main points of dedicated vs VPS?
Physical separation from other users defeats virtualization attack surface and many, covert channels immediately. Control down to hardware layer lets you do neat improvements to performance (eg custom drivers), maintenance (eg transactional kernels), and security (eg CheriBSD on FPGA-based CHERI processor). I also pointed out you can get more predictable with the implication of using a RTOS or other deterministic software + hardware combos. Heck, might even send in AS/400's, NonStop's, and/or OpenVMS clusters on cheap Alpha/Itanium servers to get uptime you haven't seen in cloud world: 17+ years for one OpenVMS cluster.
Those are the strongest points that cloud can't touch at all so far. The cloud-style research on making something comparable with strong correctness arguments is in infancy and almost all academic R&D. Which implies things about what they're using now... Of course, the outages and papers at DEFCON etc already told us that, didn't they?
Physical separation from other users defeats virtualization attack surface and many, covert channels immediately. Control down to hardware layer lets you do neat improvements to performance (eg custom drivers), maintenance (eg transactional kernels), and security (eg CheriBSD on FPGA-based CHERI processor). I also pointed out you can get more predictable with the implication of using a RTOS or other deterministic software + hardware combos. Heck, might even send in AS/400's, NonStop's, and/or OpenVMS clusters on cheap Alpha/Itanium servers to get uptime you haven't seen in cloud world: 17+ years for one OpenVMS cluster.
Those are the strongest points that cloud can't touch at all so far. The cloud-style research on making something comparable with strong correctness arguments is in infancy and almost all academic R&D. Which implies things about what they're using now... Of course, the outages and papers at DEFCON etc already told us that, didn't they?