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Space Force Shifts to New Space Data Network

April 20, 2026

2 min read

Key Takeaways

Space Force drops funding for SDA's Transport Layer.
New Space Data Network (SDN) backbone to be developed.
SDN to provide global satellite communications.
Budget includes $1.6 billion for SDN build-out.

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Strategic Implications

This shift may indicate the Space Force's preference for a more integrated and resilient satellite communications network. The decision could suggest a move away from traditional satellite constellations and towards more proliferated and flexible systems, which may benefit the development of future space-based capabilities.

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What Happened

Service Drops SDA Transport Layer for SDN Backbone

The Space Force has announced plans to shift away from the Space Development Agency’s (SDA) Transport Layer satellite constellation, instead focusing on the development of a new Space Data Network (SDN) backbone. The SDN will provide a global satellite communications network, with a budget of $1.6 billion allocated for its build-out. The decision was revealed during a briefing on the Space Force’s fiscal 2027 budget, which includes a significant increase in funding for space systems and research and development. This was first reported by Breaking Defense.

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