The correct answer is: D. all of the mentioned
Azure, AWS EC2, and AWS EC3 all run on Xen Hypervisor.
Xen Hypervisor is a type-1 hypervisor that runs directly on the physical hardware of a computer. It allows multiple operating systems to run on the same physical machine at the same time. This is known as virtualization.
Azure is a cloud computing service created by Microsoft. It offers a wide range of services, including computing, analytics, storage, and networking. Azure uses Xen Hypervisor to provide its virtual machine (VM) service.
AWS EC2 is a cloud computing service created by Amazon Web Services. It offers a wide range of services, including computing, storage, networking, and databases. AWS EC2 uses Xen Hypervisor to provide its VM service.
AWS EC3 is a cloud computing service created by Amazon Web Services. It offers a high-performance computing (HPC) service that is based on Xen Hypervisor.
Xen Hypervisor is a popular choice for cloud computing services because it is reliable, scalable, and efficient. It is also open source, which means that it is free to use and modify.