Chapter 10 · 2006–now

The dial tone

Metered service on infrastructure someone else owns. Bell's business model won in the end — running on the software Bell was forced to give away.

Think about what a dial tone was. You picked up the phone and the network was just there — no generator in your basement, no switchboard in your hallway. Somebody else owned the machines. You paid for what you used. For most of a century that model belonged to the phone company, and this book opened with the deal that built it.

Now watch it come back wearing a different logo. In the early 2000s, Amazon was a bookstore with a hard engineering problem: every November its computing needs spiked for the holidays, so it owned a mountain of servers that sat half-idle the rest of the year. Internally, teams had gotten good at carving that mountain into standard, rentable-feeling pieces. An executive named Andy Jassy pitched the leap: the plumbing itself is a product. In 2006, Amazon Web Services started renting computing by the hour, to anyone, with a credit card.

Feel how strange that was in 2006. Real computing meant owning machines — racking them, cooling them, replacing their dead drives at 2 a.m. AWS said: pick up the phone, get a dial tone. A thousand servers for the weekend, back off the bill by Monday. A startup no longer bought a server room before its first customer; it rented exactly what it needed, from someone else’s mountain. An entire generation of companies — the whole 2010s startup economy — exists because trying an idea stopped requiring capital.

And what ran on the rented mountain? Top to bottom, the accumulated escapes of this book. The machines ran Linux — chapter 7’s hobby — because when you operate a million computers, per-machine license fees are absurd and the freedom to modify your own operating system is oxygen. The slicing came from chapter 9 — virtual machines first, containers after — because renting fractions of machines is the entire business. The cloud, wall to wall, is the free software AT&T was forced to leak, resold as a metered utility. Bell’s business model, running on Bell’s escaped software. The deal of 1913 won twice.

The dial tone spread past the server room. In 2008 the first Android phones shipped, with the Linux kernel inside; billions of pockets now carry the operating system that left New Jersey as a tape, and almost nobody carrying it knows. And the surrender that says everything: Microsoft — whose CEO had called Linux a cancer in 2001, whose whole empire was the operating system you paid for — now ships a full Linux kernel inside Windows, because its own cloud business runs more Linux than Windows. Nobody defeated anybody. The utility model just made the old fight irrelevant.

Which brings the story to the page in front of you. This site is served the dial-tone way — static files on someone else’s edge machines, no server of mine humming anywhere. The interactive below traces the journey your click just took: from your device, through your router, across your provider’s Linux-powered network, to an edge machine near you that is almost certainly a slice of Linux in a rented datacenter, and back — usually in under a tenth of a second. Count the Bell Labs fingerprints along the route.

By the mid-2010s, then, compute is a utility, the utility runs on the escaped software, and the machines are consolidating into buildings the size of city blocks. One thing is still missing from those buildings: a reason to fill them with a completely different kind of chip. Chapter 8 left the free lunch dead. The last chapter is about where the second one got served.