Iridium vs Viasat
Side-by-side comparison of AI visibility scores, market position, and capabilities
Iridium (NASDAQ: IRDM), 66 LEO satellites providing truly global pole-to-pole coverage; $872M trailing revenue in 2025, serving IoT, maritime, aviation, and defense connectivity customers.
About
Iridium Communications Inc. is a publicly traded American satellite communications company headquartered in McLean, Virginia, operating the world's only truly global satellite network capable of providing voice and data coverage at every point on Earth including the poles. The company's constellation of 66 active low Earth orbit satellites, supported by 14 in-orbit spares, uses inter-satellite links to route communications without relying on ground stations, enabling truly pole-to-pole coverage. As of December 31, 2025, Iridium reported a trailing 12-month revenue of $872 million.\n\nIridium's customer base spans government and defense, maritime, aviation, land mobile, and IoT segments. The company provides satellite phones and personal communicators, broadband terminals for ships and aircraft, and low-cost IoT modules for asset tracking, environmental monitoring, and remote sensing. The U.S. Department of Defense is one of Iridium's largest customers through its EMSS (Enhanced Mobile Satellite Services) contract.\n\nIridium launched its second-generation Iridium NEXT constellation between 2017 and 2019 at a cost of approximately $3 billion, providing higher throughput broadband via Iridium Certus, a multi-service platform offering speeds up to 704 Kbps. While not competitive with Starlink for bandwidth, Iridium's unique global coverage, polar reliability, and small device form factor make it irreplaceable for aviation, maritime, and government users in remote areas.
Viasat (NASDAQ: VSAT), satellite broadband for 500K+ subscribers via GEO satellites; acquired Inmarsat in 2023 for $7.3B, adding aviation, maritime, and government connectivity capabilities.
About
Viasat Inc. is an American satellite communications and cybersecurity technology company headquartered in Carlsbad, California, and listed on NASDAQ. The company provides satellite broadband internet services to residential, commercial aviation, maritime, and government customers, primarily via its fleet of high-throughput geostationary satellites including the ViaSat-3 series. Viasat acquired Inmarsat in 2023 for $7.3 billion, significantly expanding its fleet, government, and aviation connectivity businesses.\n\nViasat's Government Systems segment is a major supplier of tactical data links, satellite communication terminals, and cybersecurity products to the U.S. military and allied defense forces. This defense business provides a stable, high-margin revenue base that differentiates Viasat from pure commercial satellite operators. The combination with Inmarsat added L-band global maritime and aviation SATCOM capabilities complementing Viasat's Ka-band broadband offering.\n\nViasat faces intense competition from SpaceX Starlink, which has disrupted the satellite broadband market with its low Earth orbit constellation offering lower latency at competitive prices. Viasat has been challenged by higher launch costs and satellite anomalies, but its ViaSat-3 fleet and the Inmarsat integration position it as a full-spectrum satellite services provider for aviation, maritime, enterprise, and government customers that require reliable GEO-based global coverage.
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