The Ultra-fast CMS platform "KUSANAGI"
KUSANAGI accelerates WordPress up to 260 times faster while ensuring a secure and stable operating environment, making it an ideal solution for websites of all sizes.

KUSANAGI’s Four Key Strengths
Faster – Ultra-fast performance with no tuning required
KUSANAGI delivers unparalleled WordPress acceleration, up to 260x faster with caching. Pre-optimized for maximum speed, it ensures lightning-fast load times without any manual tuning.
Even during sudden traffic spikes from media exposure, KUSANAGI keeps your site stable and responsive, preventing potential revenue loss. It also enhances UX and conversion rates for e-commerce and dynamic sites, where cache control can be challenging, ensuring consistently fast performance.

Safer(Security)
– Essential protection for business websites
KUSANAGI provides regular security updates and pre-configured settings for a secure and stable environment. SSL is easy to set up, ensuring encrypted communication. Designed for business and e-commerce sites, it offers essential security features from the start, reducing setup effort.
Freedom
– Flexible, customizable, and scalable
KUSANAGI allows you to freely combine and customize OS and middleware to build an environment tailored to your needs. It ensures seamless, unified operations across multiple cloud platforms, allowing for consistent management and deployment.
Cost Optimization
– Maximize performance, minimize costs
KUSANAGI’s high efficiency reduces server load, enabling fast performance even in low-resource environments. By optimizing resource usage, it helps lower infrastructure costs and streamline operations, making long-term management more efficient.
Proven by Data – KUSANAGI’s Speed and Reliability in Action
KUSANAGI in Action – Performance Proven by the Numbers
High Speed
KUSANAGI(*2)delivers up to 260x faster performance compared to AlmaLinux OS(*1) with the same middleware when page caching is enabled.
Even without caching, it achieves approximately 2x faster speeds, ensuring smooth performance even in non-cacheable environments and within the WordPress admin dashboard.
High Performance (Resilience)
In high-load environments with 1,000 concurrent connections(*3), KUSANAGI maintains a page load time of under 8ms and handles over 80,000 requests per second with page caching enabled.
Its resilient architecture ensures consistent performance even under sudden traffic surges, preventing slowdowns and downtime.
Cost Reduction
KUSANAGI delivers the same or better performance on a virtual machine (VM/VPS) with half the CPU power, one-fourth the memory, and one-tenth the disk performance, even without caching.
This means you can achieve comparable performance on a VM/VPS at just one-fourth of the cost, significantly reducing infrastructure expenses.
Comparison of *4 and *5
*1 AlmaLinux 8.9
Microsoft Azure Standard D4as_v5 instance (3.24Ghz AMD EPYC 7763 processor 4 vCPU, 16GiB), Premium SSD LRS, East Japan Region, PHP 8.0.30, Nginx 1.20.1, MariaDB 10.5.22, WordPress 6.4.2
*2 KUSANAGI 9.4.8-1
Microsoft Azure Standard D4as_v5 instance (3.24Ghz AMD EPYC 7763 processor 4vCPU, 16GiB), Premium SSD LRS, East Japan Region, PHP 8.0.30, Nginx 1.25.3, MariaDB 10.5.23, WordPress 6.4.2
*3 AlmaLinux 8.9
Standard D32as v4 instance (AMD EPYC 7452 32-Core Processor processor 32vCPU, 128GiB), Premium SSD LRS, East Japan Region, High-speed network enabled, AlmaLinux release 8.9, PHP 8.3.4, Nginx 1.25.4, MariaDB 10.11.7, WordPress 6.4.3
*4 AlmaLinux 8.9
Microsoft Azure Standard D4s v4 instance (2.60GHz Intel(R) Xeon(R) Platinum 8272CL CPU processor 4vCPU, 16GiB), Premium SSD LRS, East Japan Region, High-speed network enabled, PHP 8.0.30, Nginx 1.22.1, MariaDB 10.5.22, WordPress 6.4.3
*5 KUSANAGI 9.4.12-1.el8(AlmaLinux 8.9)
Microsoft Azure Standard B2s instance(2.30GHz Intel(R) Xeon(R) CPU E5-2673 v4 processor 2vCPU, 4GiB), Standard HDD LRS, East Japan Region, High-speed network disabled, PHP 8.0.30, Nginx 1.25.4, MariaDB 10.5.24, WordPress 6.4.3

KUSANAGI’s Reliability – Proven Adoption Worldwide
As of (September 2024), KUSANAGI is available in 37 countries and 203 regions, on 28 major platforms internationally, and has had a cumulative 90,000 deployments thus far.(as of July 2024)
KUSANAGI Virtual Machine Stack
KUSANAGI 9 is available as a CentOS Stream / AlmaLinux OS-based virtual machine stack.
It provides a highly flexible environment, allowing users to configure their system with various middleware and version options.
In addition to WordPress, KUSANAGI supports provisioning for LAMP/LEMP stacks, Movable Type, and Drupal.

KUSANAGI 8 has ended its updates due to the end of community support for CentOS 7 on June 30, 2024.。
End of life KUSANAGI 8 / KUSANAGI 9 on CentOS Stream 8
KUSANAGI Standard Features
KUSANAGI is designed to provide ultra-fast performance, robust security, and a flexible operating environment with a variety of built-in features.
What KUSANAGI’s standard features offer:
- Performance Optimization – Pre-tuned middleware and caching for maximum speed
- Enhanced Security – Latest middleware, WAF, TLS 1.3, and DoS protection included
- Flexible Environment – Supports multiple middleware and CMS configurations
- Unified Operations – Manage settings and automation with KUSANAGI commands
High-Speed Performance
KUSANAGI is optimized to deliver maximum performance with zero manual tuning.
With support for HTTP/3 and HTTP/2, pre-tuned middleware configurations, and page caching, it ensures lightning-fast operation for WordPress and other CMS platforms.
Strong Security
KUSANAGI comes with built-in security measures to safeguard your site.
It provides the latest middleware through the KUSANAGI repository and includes features like WAF, SELinux, TLS 1.3, and DoS protection to enhance security.
Learn more: KUSANAGI Standard Features
Unified Operations Management
KUSANAGI’s dedicated command set enables consistent management across cloud environments and OS variations.
It allows for provisioning CMS environments, managing middleware, SSL settings, backups, and more with ease.
📖 Learn more: KUSANAGI 9 Commands
Flexible Environment Configuration
KUSANAGI supports a wide range of middleware for LAMP/LEMP environments, allowing users to configure the best setup for their CMS and applications.
It also enables simple command-based version management and middleware switching.
WordPress-Specific Features
KUSANAGI provides dedicated plugins to streamline WordPress management.
With features like automatic updates, cache management, theme optimization, and translation acceleration, it significantly reduces operational overhead.
📖 Learn more: KUSANAGI-Specific Plugins
Summary
KUSANAGI comes with standard features for performance, security, and flexible operations, providing powerful support for WordPress and CMS management.
For more details, refer to the documentation and take full advantage of these features!
📖 Learn more about KUSANAGI’s features here: KUSANAGI Standard Features
Use KUSANAGI
From Free Edition to Advanced Business Features
Edition | Feature |
---|---|
Premium Edition | Equipped with WEXAL®, accelerating everything from backend processing to rendering. Ideal for high-traffic media and business sites. |
Business Edition | Designed for enterprise websites that require stability and reliability. |
Free Edition | Delivers uncompromised speed and security at no cost. For personal and development use. |
Available on various platforms
KUSANAGI is available on major platforms, as well as software like VMware and Docker.
Platforms where KUSANAGI is available
Awards
Innovative Services
KUSANAGI wins "Innovative Service Special Award" at the "Going-Global Innovations Competition" hosted by Tokyo Metropolitan Government.
Press Release (Japanese Only)
