Description: Quasi-redundancy is a system design approach that aims to provide partial redundancy to ensure service availability, especially during Distributed Denial of Service (DDoS) attacks. This concept is based on the idea that, instead of implementing full redundancy, which can be costly and complex, systems can be created to maintain essential functionality even when some components are compromised or overloaded. Quasi-redundancy allows systems to continue operating at an acceptable level, minimizing the impact of a DDoS attack. This approach is particularly relevant in the context of security in various networked systems, where devices and applications can be vulnerable to massive attacks. By implementing quasi-redundancy, networks can be designed to maintain communication and control of critical services, even if some components are attacked or fail. The main characteristics of quasi-redundancy include adaptability, resilience, and resource optimization, allowing organizations to maintain service continuity and protect their digital assets more efficiently.