AWS Adds support for nested virtualization

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Frequently Asked Questions

What is nested virtualization on AWS?

Nested virtualization allows you to run a hypervisor inside an EC2 instance, enabling virtual machines within virtual machines. This is particularly useful for testing multi-cloud environments, running legacy workloads, and developing hypervisor-level software without dedicated hardware. AWS now supports this on select instance types, making it easier to build complex virtualized architectures directly in the cloud.

Which AWS instance types support nested virtualization?

AWS supports nested virtualization primarily on bare metal and Nitro-based instances, including certain C5, M5, and R5 families. The feature leverages Intel VT-x or AMD-V hardware extensions exposed through the Nitro hypervisor. Before provisioning, check the latest AWS documentation for your region's availability. Platforms like Mewayz simplify AWS infrastructure management with 207 ready-to-use modules starting at just $19/mo.

What are common use cases for nested virtualization?

Common use cases include running container platforms like Docker inside VMs, testing multi-hypervisor environments, CI/CD pipelines requiring full VM isolation, and security research involving sandboxed operating systems. Developers also use it to replicate on-premises VMware or KVM setups in the cloud. With Mewayz's 207 pre-built modules, you can rapidly deploy and manage these nested virtualization workflows without writing infrastructure code from scratch.

Does nested virtualization affect performance on AWS?

Yes, nested virtualization introduces some performance overhead since the guest hypervisor adds an extra translation layer for CPU, memory, and I/O operations. Typical overhead ranges from 5–15% depending on workload type. AWS Nitro instances minimize this impact through hardware-assisted virtualization. For production workloads requiring optimal performance, consider benchmarking your specific use case and right-sizing instances accordingly.