For most of the modern internet era, connectivity has meant fiber. Fiber-optic cables buried beneath streets and oceans have formed the backbone of global communications, carrying large volumes of data at high speeds.
But today, the digital world is expanding faster than traditional infrastructure can reach. One third of the global population — about 2.6 billion people — remain disconnected from the internet entirely.1 In many regions, the cost of deploying fiber networks makes expansion economically unviable. Satellite internet has emerged as a transformative force to bridge the connectivity gap between demand and feasibility.
Satellite internet extends connectivity to the most remote corners of the world, functioning virtually anywhere with a clear view of the sky. For rural communities, offshore operations and disaster zones, it can be the only viable path to connectivity. By offering an independent communications channel when terrestrial networks fail, satellite internet also plays a key role in enterprise resilience.
As a form of space-based infrastructure, satellite internet wirelessly transmits data using satellites instead of a physical fiber network. In simple terms, here's how it works:
Ultimately, every request passes through a data center, creating a hybrid infrastructure solution that blends space- and ground-based connectivity.
The most important distinction in satellite internet lies in orbital altitude. Traditional geostationary (GEO) satellites orbit approximately 22,000 miles above Earth. At that distance, a small number of satellites can cover the entire globe, but the trade-off is latency. Signals must travel 44,000 miles round-trip, introducing delays of 600-700 milliseconds.2 That's more than half a second, which is disruptive to online activities such as live broadcasts, video conferencing, cloud applications and other interactive uses that depend on a responsive connection.
Low earth orbit (LEO) satellites operate much closer — as low as 300 miles and generally within about 1,200 miles of Earth. This dramatically reduces latency to 20-50 milliseconds, making real-time applications more feasible.2
The reduced latency is what makes LEO satellites especially effective for users who expect instant connectivity. Traditional satellite systems often struggled to support applications like streaming, video conferencing and other interactive activities because of the noticeable lag caused by long-distance signal travel. By operating closer to Earth, LEO networks deliver a faster and more responsive experience.
The trade-off here is scale. Because each satellite covers a smaller portion of the Earth's surface, LEO systems require large constellations of thousands of satellites to ensure continuous coverage. This need for expansive infrastructure has triggered a new orbital land grab.
The satellite internet industry is undergoing rapid expansion, growing from 2,000 to 11,000 operational satellites between 2019 and 2025.3 That number is expected to grow exponentially, driven by a small group of companies competing to deploy large-scale LEO constellations and define the future of space-based connectivity.
SpaceX Starlink operates more than 10,000 satellites as of 2026. Its long-term vision includes deploying up to 42,000 satellites to create a dense global mesh network capable of delivering near-global coverage.4
Amazon Leo has initiated satellite deployments and plans to build a constellation of more than 3,000 satellites aimed at expanding access while increasing competition in pricing, performance and global coverage.5
Eutelsat OneWeb has launched more than 600 satellites focused on providing enterprise, government, aviation and maritime connectivity, particularly in remote and underserved regions.
Together, these systems are transforming satellite internet from a backup option into a competitive alternative. Industry projections underscore how rapidly this domain is expanding. Estimates for the number of LEO satellites in orbit within the next five to 10 years range from roughly 70,000 to as many as 90,000 — reflecting both the technical scalability and commercial momentum behind LEO networks.6,7
For all the excitement surrounding satellite internet and the vast constellations orbiting overhead, the reality is that the internet still comes back to Earth. Satellites can extend reach and move data across geographically isolated areas, but they cannot operate without ground-based infrastructure.
The reason matters more than it first appears. LEO networks spend enormous capital to collapse latency in the space segment — reducing it from the 600-700 milliseconds of traditional GEO systems to 20-50 milliseconds. But that hard-won advantage only survives if the traffic stays fast once it returns to Earth. A ground station is essentially antennas plus backhaul, and that backhaul must terminate somewhere. Where it lands determines everything: If satellite traffic must travel hundreds of miles over a single transit path to reach the cloud regions and content users want, the latency saved in orbit is lost.
This is where multi-tenant, carrier-neutral data centers become the decisive link. Landing LEO traffic into a facility dense with direct cloud on-ramps, internet exchanges and carrier choice lets a request reach AWS, Azure, Google Cloud or the broader internet in just a hop or two — rather than backhauling across the country over a congested public path. The data center's value here is not storage alone; it is interconnection. It is the point where the speed that made LEO worthwhile is either preserved or squandered.
As satellite constellations scale, that ground-side architecture only grows in importance. The future of connectivity will not be built solely in orbit or underground — it will depend on the seamless partnership between the two. CoreSite multi-tenant data centers provide exactly this kind of interconnection-rich landing point, and CoreSite is ready to do its part to bridge the digital divide.
Ready to explore how hybrid networks are powering the next generation of internet connectivity?
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