DZS makes networking equipment and software that helps telecom carriers and internet service providers (CSPs) build and upgrade broadband networks. The core use case is enabling CSPs to deliver high-speed internet — over fiber, copper, or wireless — to homes and businesses. DZS sells to regional, national, and international carriers, as well as enterprises in verticals like education, hospitality, and healthcare, through direct sales and channel partners. DZS organizes its products into four areas: Access Edge (OLTs that connect CSPs to customers over fiber or copper), Subscriber Edge (ONTs and smart gateways on the customer premises side), Optical Edge (high-capacity transport gear for 4G and 5G networks up to 400 Gbps), and Cloud Software (network management, orchestration, and subscriber analytics tools). Most revenue comes from hardware sales, which are project-driven and can be lumpy. DZS is actively building recurring software revenue through SaaS products like CloudCheck and Expresse. A meaningful demand driver is U.S. and global government broadband funding programs, which fund CSPs to extend fiber into underserved areas. DZS is fabless, outsourcing manufacturing entirely to contract manufacturers. In 2024, DZS acquired NetComm, adding fiber extension, fixed wireless access, and IoT products for the Australia/New Zealand market, and divested its Asia subsidiaries to focus on the Americas, EMEA, and ANZ regions.