My family has probably watched Lord of the Rings a dozen times or more1. We can (and sometimes will) quote entire passages from the films.
We're pumped to have Dennis Thankachan, Co-Founder and CEO of Lightyear, back on TeleGeography Explains the Internet.
Last time Dennis joined us on the show, we dug into Lightyear's approach to creating a digital telecom lifecycle automation platform for enterprise networks.
This time, we discuss their State of Connectivity Report, which dovetails nicely with many of the issues we research here at TeleGeography. (Perhaps this read is a perfect companion to our State of the Network? A match made in heaven, etc.)
Latency is a term that’s frequently cited when discussing long-haul networks. But what is it really?
TeleGeography’s Submarine Cable Map recently hit a new milestone: depicting over 650 cable systems.
As of February 2025, that’s a whopping 570 in-service systems, with another 81 planned.
The number of cable systems we study is constantly increasing. This is due to massive investment in this infrastructure—both along major routes and to small islands—as well as our ongoing efforts to track global systems in more detail.
The number of in-service systems is greater now than in any other year within the last two decades.
Hello, gentle readers, and welcome to the 2025 State of the Network Report—our eighth edition.
The TeleGeography team spent the last year compiling market surveys, building algorithms, and analyzing emerging trends, and now we're ready to share the highlights.
We haven't been getting enough fiber here at TeleGeography Explains the Internet, but we're about to change that.
Nutritional jokes aside, this week, we welcome Todd Chapman, a veteran in fiber development, to the hot seat. Todd walks us through the ins and outs of Layer 0 of the physical infrastructure underlying data transmission. Some classic explaining of the internet.
In this episode, you'll get a walkthrough of the process that takes a fiber project from manufacturing to lit service—get ready to learn a thing or two about different types of fiber and their uses. We also get some good explanations of the dark fiber market and an overview of when enterprises might be interested in leasing dark fiber instead of lit service.
Here's a glimpse at what we discussed. Scroll to the bottom to listen to the whole discussion in its fiber-rich glory.
Lately, I've been thinking about the movie director Alfred Hitchcock. One of his first big hits was a 1936 film called Sabotage.
In November, we unveiled our new Market Connectivity Score (MCS) and dropped our first public rankings of the top ten most connected and fastest-growing cities in the world.
Because we update the MCS quarterly, it's time to see how those rankings have changed.
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