Arrcus' ArcOS is a cloud-native, high-performance NOS for Edge/Access, Cellsite Router (DCSG), Fixed/Mobile, Distributed AI, Data Center, Distributed Disaggregated Backbone Router (DDBR) and Cloud infrastructure. This Internet-scale, independent NOS enables scalable infrastructures across physical, virtual, and cloud environments. Its architecture is 64-bit, high availability, and form-factor agnostic, as well as multi-process, multi-thread, and multi-core CPU capable. ArcOS supports a wide variety of ODM merchant silicon platforms and chipset vendors. It is fully programmable with open APIs, YANG, OpenConfig, and extensive telemetry. Additionally, it features embedded security capabilities that include protection against DDoS and intrusion attacks, ensuring robust security. Notably, ArcOS is optimized for Distributed AI networking, seamlessly connecting AI workloads from the edge to the core by enabling high-speed, lossless connectivity. In summary, ArcOS offers a compelling combination of cost-effectiveness, high performance, robust security, flexibility, and operational efficiency.