zlacker

Some web searches that I have made were ...

* doc

https://github.com/awsdocs/amazon-ec2-user-guide-windows/tre...

  ... Nitro-based instance type, such as M5 or C5 ...
  ... instance based on the Xen System, such as M4 or C4 ...

* FAQ

https://aws.amazon.com/ec2/faqs/

  Q. Will AWS continue to invest in its Xen-based hypervisor?
  Yes. ...

  Q. What is the Nitro Hypervisor?
  ... The Nitro Hypervisor is built on core Linux Kernel-based Virtual Machine (KVM) technology ...

> I am not sure how to interpret this. Maybe "Q. Will AWS continue to invest in its Xen-based hypervisor?" is a Marketing / PR way of phrasing something?

* Others

https://brendangregg.com/blog/2021-07-05/computing-performan... https://www.usenix.org/conference/lisa21/presentation/gregg-... https://www.usenix.org/system/files/lisa21_slides_gregg_comp...

  VM Improvements
  #6 VM Xen AWS 2017
  #7 VM AWS Nitro 2017