The U.S. Space Force has entrusted SpaceX with a $2.29 billion contract to create the backbone of its Space Data Network (SDN), a satellite communications system designed to maintain continuous, secure connectivity for American military forces worldwide. SpaceX must deliver a fully operational prototype by the end of 2027 under this firm-fixed-price deal.
The SDN Backbone will comprise a constellation of low Earth orbit satellites offering high-capacity, low-latency data transport essential to joint military operations. Its purpose is to connect sensors, weapons, and command centers across land, sea, and air even in contested or disrupted ground network environments. Essentially, this system acts as a hardened, private version of SpaceX’s Starlink service, optimized for battlefield communications that need reliability and security.
The U.S. Space Force highlighted the importance of partnering with SpaceX due to the company’s commercial innovation and rapid deployment capabilities. Officials emphasized the dual demand for speed and scalability, explaining that fast prototyping and efficient contracting authorities enable swift delivery of advanced communication solutions to warfighters.
This SDN Backbone will complement the Space Development Agency’s Transport Layer, together providing an open, interoperable data transport architecture to support current and future departmental missions critical to national defense.
SpaceX’s rising military role in 2026 extends beyond this contract. In April, the company secured $178.5 million to launch missile tracking satellites and is already integrated into missile defense software initiatives, strengthening its status as a key military contractor.