A developer in Bangalore pushes code, and a colleague in Berlin reviews it within minutes.
A student in rural India watches a free MIT lecture, and a Singapore startup reaches six continents before lunch.
We live in a world where information moves at the speed of light. Most of us have never stopped to ask, “How did that happen?”
The answer is a 60-year story of Cold War panic, brilliant engineers, accidental breakthroughs, and one very famous computer crash.
It started with pure panic.
- The Soviet Union launched Sputnik, the first satellite in orbit.
The U.S. government’s reaction was essentially, “If they can put something in space, they can probably drop a nuclear bomb on us.”
So in 1958, the Department of Defence created ARPA, a research agency with one mission: to keep America technologically ahead. And one of the first problems they noticed was terrifying in its simplicity.
The entire telephone network ran through central switches. Take out a few of those? Huge parts of the country go completely silent.
Not great if you’re trying to survive a nuclear war.
Two strangers solved the same problem without even knowing about each other
In the early 1960s, a researcher named Paul Baran in the US and another named Donald Davies in the UK both independently came up with the exact same idea.
Instead of routing a call through a single dedicated path (which could be destroyed), break the data into small chunks. Let each chunk find its own way through the network. Reassemble at the other end.
They called it packet switching.
No single point of failure. The network literally routes around damage.
This one idea is still how the Internet works today.
The first message ever sent on the Internet was a typo…
October 29, 1969. UCLA tries to send the word “LOGIN” to Stanford over ARPANET: the first real network.
The system crashed after two letters. Only “LO” was all that made it through.
But it worked. And within months, they had it running reliably. The era of computers talking to each other had begun.
Then came the protocol that made everything click
By the mid-70s, there were multiple networks, but they couldn’t talk to each other. Each one had its own language.
In 1974, Vint Cerf and Bob Kahn published TCP/IP, a universal protocol that any network could speak.
The genius move? They didn’t patent it. Didn’t lock it down. Anyone could implement it for free.
In 1983, ARPANET switched to TCP/IP. Suddenly, every network on the planet could connect to every other network. That openness is arguably the single most important reason the Internet became what it is.
Think about that next time someone argues that locking things down creates value.
A physicist at a Swiss lab built the thing we actually use every day
The Internet existed by the late 80s. But it was basically only for scientists and engineers. You had to know what you were doing.
In 1989, Tim Berners-Lee at CERN had a problem: too many researchers, too many documents, zero way to find anything. He wrote up a proposal to fix it.
His boss scribbled on the cover: “Vague but exciting.”
That vague-but-exciting idea became the World Wide Web: HTML, HTTP, and URLs. The first website went live on August 6, 1991. It explained what the web was. (It still exists, by the way. You can visit it.)
Then, in 1993, someone built Mosaic: a browser that showed images alongside text, and the whole thing blew open. Suddenly, the Internet wasn’t just for engineers. It was for everyone.
The 90s were absolute chaos (in the best and worst way)
Once businesses were allowed on the Internet in 1991, things moved fast.
AOL sent CDs to literally every house in America. Amazon launched in a garage, selling books. Google showed up in 1998 and made every other search engine look like a filing cabinet.
Then came the dot-com boom. Billions poured into startups with zero revenue that somehow had billion-dollar valuations. Pets.com spent millions on a Super Bowl ad and was dead within the year.
March 2000: the bubble burst. Trillions wiped out.
But here’s the thing everyone forgets: the infrastructure didn’t disappear. Amazon and Google came out the other side leaner and dominant. The money burned. The Internet didn’t.
The iPhone changed who the Internet was for
- Apple launches the iPhone.
Not the first smartphone, but the first one that regular people actually wanted to carry around.
Add 4G LTE a few years later, and something remarkable happened: billions of people in developing countries got their first real Internet access on a phone. Countries that had never built telephone landline infrastructure leapfrogged straight to mobile broadband.
By 2016, mobile traffic globally exceeded desktop traffic for the first time. The Internet had left the desk and gone everywhere.
AWS launched quietly and changed software forever
- Amazon launches Amazon Web Services with almost no fanfare.
Before this, if you wanted to run a software company, you bought servers, leased rack space, hired ops people, and prayed nothing broke. It took months to scale up.
After this? You rent computing by the hour. Two people with a laptop and a credit card can build something that runs for millions of users.
Microsoft and Google followed. By the 2010s, “we host our own servers” started sounding the way “we print our own maps” sounds now.
So where does that leave us?
We’re now at 5.4 billion Internet users globally.
AI is changing how people search, create, and interact with information in real time. Starlink is beaming Internet to places that never had it. 5G is opening up use cases — autonomous vehicles, industrial automation, AR — that genuinely weren’t possible before.
And honestly? We still haven’t figured out some of the basics. Cybersecurity is a mess. Privacy is complicated. Misinformation spreads faster than corrections. The digital divide is real.
The Internet was designed in the 1970s for a network of a few hundred researchers. The security problems we’re dealing with today are partly a legacy of those early choices made before anyone imagined 5.4 billion simultaneous users.
The one thing I keep coming back to
Every generation of builders inherited infrastructure they didn’t create and extended it in ways the previous generation never anticipated.
The people who built TCP/IP didn’t imagine YouTube. The people who built the Web didn’t imagine the iPhone. The people who built AWS didn’t fully anticipate what a two-person startup could do with it.
That’s the pattern. Build something open. Let other people surprise you with what they do with it.
It’s worked pretty well so far.
What do you think the next major shift looks like? AI agents? Decentralization? Something we’re not even talking about yet?
I’m genuinely curious. Drop it in the comments. 👇
If this was worth your 4 minutes, share it with someone who builds things on the Internet. The more context we carry, the better we build.
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