York Space Systems designs, manufactures, and operates satellites primarily for U.S. national security and government customers. York acts as a "mission prime," taking full program responsibility across the entire satellite lifecycle — from design and manufacturing through launch, on-orbit operations, and ground station management. York's core product is a family of modular, standardized satellite platforms: the S-CLASS (small satellites, 85–200 kg), LX-CLASS (mid-size, up to 500 kg), and M-CLASS (large, up to 2,000 kg). These platforms share roughly 75% of hardware and 95% of software, which York argues enables lower costs and faster delivery versus traditional aerospace primes. York's primary customer is the U.S. government, notably the Space Development Agency under the Proliferated Warfighter Space Architecture program, along with the Intelligence Community, NASA, and other DoD entities. York wins fixed-price contracts to build and deliver satellites, then earns recurring revenue over each satellite's operational life through software licenses, constellation management, ground station services, and operations-as-a-service. York is deliberately shifting its mix toward these recurring software and services revenue streams to reduce dependence on lumpy hardware contract awards. York is vertically integrated, building key components — flight computers, attitude control, power systems, and now propulsion via the 2026 Orbion acquisition — in-house to protect margins. York holds a backlog of roughly $543M and 107 spacecraft as of year-end 2025.