🔷 Xen Project 4.21

Regional Contribution Analysis - Hypervisor Development

4.21
Latest Release
Nov 2025
Release Date
9
Board Members
~15
Contributors
x86 / Arm / RISC-V
Architectures

🔑 Key Finding: Europe Currently Leads Xen Development

Estimated Regional Distribution - Xen 4.21

Comparison: Xen vs Linux Kernel

Xen 4.21 Advisory Board & Major Contributors

Company Region Role Focus Areas
AMD US Board Member x86 platform, Zen 5 support, AMD SEV, CPPC driver
Arm Europe Board Member Arm architecture, Cortex-R52/R82, security
AWS US Board Member Cloud infrastructure
EPAM Systems US Board Member Functional safety, automotive certification
Ford US New Member Automotive applications
Honda ROW Contributor Automotive virtualization, infotainment
Renesas ROW Contributor Automotive semiconductors
Vates Europe Board Member Currently Release Manager, XCP-ng, RISC-V port
↳ Oleksii Kurochko Europe Current Release Manager Release management (4.19+), core development
Linux Foundation US Project Host Currently Community Manager
↳ Cody Zuschlag US Current Community Manager Community management (Mar 2025+)
XenServer (Citrix) US Board Member Enterprise virtualization
Bitdefender Europe Contributor Security applications
Intel US Contributor x86 virtualization extensions
SUSE Europe Contributor Enterprise Linux integration, Jan Beulich (top committer)

Linux Kernel 6.12

US
52%
Europe
9%
ROW
12%
Other
27%

Xen Project 4.21

Europe
~42%
US
~37%
ROW
~17%
Other
~4%

Regional Summary

Region Est. Contribution Key Companies Focus Areas
Europe ~40-45% Vates (currently Release Mgr), SUSE, Arm, Bitdefender Project governance, x86/Arm architecture, XCP-ng
United States ~35-40% AMD, AWS, Citrix/XenServer, Ford, Intel, EPAM x86 platform, cloud, enterprise, automotive
Rest of World ~15-20% Honda, Renesas (Japan) Automotive, embedded systems
Individual/Academic ~5% Universities, independents Research, testing