Viavi provides test and measurement equipment and optical security products through two primary segments. The Network and Service Enablement (NSE) division develops tools to test, monitor, and troubleshoot communications networks and data center infrastructure. These products help semiconductor firms and equipment manufacturers validate high-speed chips and systems for AI data centers. NSE also provides handheld fiber instruments for telecom carriers and hyperscalers, alongside navigation modules for aerospace and defense applications. The NSE business model relies on equipment sales tied to R&D cycles and technology shifts, such as the move to 1.6 terabit Ethernet. The Optical Security and Performance Products (OSP) segment manufactures specialty optical coatings and pigments. Viavi sells color-shifting pigments used by central banks for anti-counterfeiting in banknotes through an alliance with SICPA. OSP also produces precision filters that enable facial recognition in smartphones and LiDAR systems for the automotive market. This segment operates as a high-volume materials business where manufacturing volume is the primary lever for profitability. Viavi focuses on being first to market with new technology generations to secure early design wins and follow-on production activity.