Advanced Core Operating System (ACOS)
A purpose-built OS that powers mission-critical services with unmatched performance, security, and efficiency, across on-premises and cloud environments
Built for performance, agility and consistency
ACOS is engineered for the future—evolving with the demand of the times and adopting new technologies to meet requirements. The foundation of ACOS has remained consistent throughout its evolution, ensuring repeatable experience for operators.
Accelerate and Secure your Apps and Services
Modern app services demand unwavering flexibility, performance and security. Powered by ACOS, A10 infrastructure and security solutions protect and deliver your critical services at scale in any environment. With its flexibility and programmability, IT/ops teams stay agile and enable consistent operation using common DevOps and automation tools.
Flexible Deployments & Licensing for Any Environment
- Flexible form factors: physical, virtual, bare metal and container
- On-premises, private or public cloud deployments
- Perpetual, subscription or FlexPool license choices
Industry-leading Performance and Efficiency by Design
- High-speed shared memory architecture with scalable symmetric multi-processing enables performance scaling linearly
- Hardware offloading for TLS/SSL processing and DDoS attacks blocking saves system resource for processing services
- Delivers unmatched speed and capacity in a small footprint to meet operation and cost requirements

Threat Smart Security for Apps, Business, and Users
- Secure applications and perimeter, protect against multi-vector DDoS attacks, and eliminate the SSL/TLS blind spot
- Block zero-day DDoS attacks using AI/ML-powered attack pattern recognition
- Deliver resilient and secure AI and LLM environments
Operational Superiority Across Cloud, On‑premises, and Beyond
- Feature parity across all deployment scenarios, including physical, virtual, and cloud
- Fully programmable RESTful API (aXAPI) for automation and DevOps integration
- Single code base for both infrastructure and security solutions– ADC, SSL insight, CGN and DDoS protection

ACOS Architecture
Explore how ACOS powers A10’s portfolio of infrastructure and security solutions. From application delivery to DDoS protection, ACOS ensures consistent performance and security across all environments.

Frequently Asked Questions
Don’t see your question listed? Contact a product expert to get answers.
When building app services in a hybrid cloud, using different ADCs at each location adds complexity and wastes time on training and preparation. With Thunder ADC, you can deploy anywhere—physical, virtual, or cloud—and apply the same configurations, security policies, commands, and APIs to simplify operations.
Furthermore, if you also use other solutions like Thunder CGN or DDoS protection, you benefit from unified device management and consistent workflows across all ACOS-based solutions.
Yes. ACOS supports full programmability and automation through RESTful APIs called aXAPI, and integrates seamlessly with SIEM, orchestration platforms, and DevOps workflows.
A10 ACOS is the industry’s first platform delivering a highly scalable application networking optimized for multicore 64-bit CPU system. For over a decade, A10 has continuously evolved ACOS to meet modern performance and security demands.

