Modernizing DNS Infrastructure with A10 Thunder ADC
The Smart Choice to Replace Traditional DNS Infrastructure

We often talk about modernization of applications, AI/ML, applications being smart, adaptive, autonomous, modular, compostable, etc., but the plumbing behind these applications works silently in the background. It is often overlooked until these applications break. DNS becomes essential in-service discovery, resolving endpoints across multiple regions, intelligent DNS routing. Composable architectures use API-first services, and DNS is often the front door to those APIs. Therefore, without DNS these applications would not know how to communicate with each other. It will be like driving without a map or directions.
To ensure the DNS performs well in modern application environment. DNS must be highly available, fast, secure, and reliable, with low latency and geographically distributed. A10 Networks’ advanced DNS solutions are at the forefront of this transformation, providing a comprehensive suite of features that address the critical needs of modern enterprises.
Performance: Delivering Low Latency and Optimized Traffic
Thunder ADC performance is powered by A10’s Advanced Core Operating System (ACOS) with a multi-core architecture designed for high performance parallel processing to handle heavy DNS workloads. Thunder ADC can be used as a recursive resolver because it combines high-performance DNS resolution with built-in security and scalability, eliminating the need for separate DNS infrastructure. The system supports advanced DNS protocol features such as DNS over UDP, TCP, TLS and HTTPS ensuring high performance and reliability for DNS traffic. IPv4/IPv6 support, and customizable traffic policies via aFleX scripting make it ideal for securing and optimizing DNS infrastructure in enterprise and service provider environments.
Security: A Frontline Defense Against Threats
Thunder ADC is ideal for DNS because it combines high-performance load balancing with advanced DNS security features, ensuring both speed and resilience. It integrates a DNS application firewall (DAF) to block malformed queries, DNS amplification, and reflection attacks, while supporting DNSSEC to prevent cache poisoning. With built-in caching and intelligent load balancing, it can handle millions of DNS queries per second, reducing backend server load and improving response times. Additionally, features like response policy zones (RPZ) block malicious domains.
Resilience: Maintaining Business Continuity

Resilience plays a vital role in maintaining business continuity during outages or DDoS attacks. A10 Networks’ DNS solutions leverage distributed architectures and automated failover to minimize downtime and ensure continuous service delivery. The global server load balancing (GSLB) feature dynamically directs user requests to the most appropriate data center based on real-time metrics, ensuring high availability and performance.
By adopting A10 Networks’ advanced DNS solutions, organizations can efficiently replace outdated DNS infrastructure, and benefit from enhanced security, performance, and resilience. These improvements not only strengthen the dependability of DNS services, but also lower operational expenses by reducing downtime and optimizing resource allocation. A10 continues to innovate in the DNS technology so customers can leverage their existing ADC infrastructure to replace standalone DNS systems at a fraction of the cost, eliminating the need for separate investment and ongoing maintenance.