Cagliari, Italy

Cagliari: Sardinia's Gateway to Connectivity

Cagliari, the capital of Sardinia, serves as a key node for regional connectivity through the Janna submarine cable. Despite hosting just one cable, this landing point plays a significant role in linking Sardinia to mainland Italy and beyond, ensuring reliable communication and data transfer for the island's residents and industries.

The Janna Cable: Stitching Sardinia into Italy's Network

The Janna cable, operational since 2005, spans 634 km and connects Cagliari to three other Italian landing points: Civitavecchia, Mazara del Vallo, and Olbia. This domestic cable is Sardinia's lifeline to mainland Italy, with Cagliari acting as the southern anchor for the island's connectivity. While Mazara del Vallo hosts nine cables and Genoa seven, Cagliari's single cable is sufficient to serve its role as Sardinia's primary connection to the broader Italian network. The cable's chain ensures redundancy within Italy, linking Sardinia to the mainland via multiple entry points. Olbia, located in northern Sardinia, complements Cagliari's southern position, creating a balanced network that supports the island's connectivity needs.

Latency Insights: Reliable Performance

GeoCables' latency measurements highlight the efficiency of the Janna cable. With an average round-trip latency of 100 ms and a best-observed latency of 52 ms, Cagliari's connectivity is robust and dependable. These figures reflect the cable's ability to support the island's data demands, whether for business, research, or personal use.

Cagliari: A City of History and Modernity

As the largest city in Sardinia, Cagliari is not only a hub for connectivity but also a center of culture, history, and economic activity. Its metropolitan area, home to over half a million people, relies on the Janna cable to stay connected to the rest of Italy. From local industries to educational institutions, the cable ensures that Cagliari remains integrated into the national and global digital landscape.

Positioning Cagliari in Italy's Cable Network

Italy boasts a total of 37 submarine cables across 55 landing points, with an average cable length of 2763 km. While Cagliari ranks in the top 80% of landing points by cable count, its strategic importance for Sardinia cannot be overstated. Unlike Mazara del Vallo or Genoa, which host multiple cables, Cagliari's singular connection is tailored to the island's specific needs, providing a reliable and efficient link to the mainland.

Conclusion

Cagliari's role as a submarine cable landing point may seem modest in comparison to Italy's larger hubs, but its importance for Sardinia is undeniable. Through the Janna cable, the city ensures that the island remains connected, enabling communication, commerce, and collaboration. For Sardinia, Cagliari is not just a city-it is the gateway to the world.