Ninety Days That Built Modern Adtech
In the spring and summer of 2007, five companies spent $11 billion in ninety days. We're still living inside the decisions they made.
I’ve spent my career on the operating side of this industry. I was lucky enough to get thrusted into Right Media Exchange post Yahoo integration, moved upstream to the world’s largest DSP at the time; Turn, Closer to agency relationships at OpenX during the invent of Header Bidding, to a ground floor opportunity at Amazon’s APS vision, and refined my understanding of the ecosystem at The Trade Desk where I had a front row seat to the future of retail media, Digital out of home, Audio advertising and Mobile Gaming. We called these the emerging channels. And the longer I do this, the more convinced I am of something that sounds like an exaggeration but isn’t most of the structure of the digital advertising business we work in today was set in a single ninety-day window almost twenty years ago.
Between April and July of 2007, five companies: Google, Microsoft, Yahoo, AOL, and WPP announced roughly $11 billion in adtech acquisitions. Not over a few years. Over about ninety days. By the end of that year, nearly every independent adtech asset of meaningful scale had been pulled inside one of these five buyers. The category as we know it, “the pipes,” the auctions, the ad servers, the agency versus platform tension, was effectively poured and set in that window. Crazy to think about right?
This is the first post in a series I’m going to write about that period and what it teaches us. I’ll take each of the five companies in turn over the coming weeks. But I want to start here, at the right altitude, because you can’t understand any one of these deals without seeing the whole board at once. So let me walk you through what happened, and then why it still matters every single day in the business we work in now.
The spark
It started with Google. On April 13, 2007, Google announced it would buy DoubleClick for $3.1 billion in cash.
You have to remember what Google was at that moment. It was a search engine advertising machine of unprecedented profitability, and almost nothing else. It had effectively no presence in display advertising: no ad server that premium publishers used, no exchange where inventory got auctioned. DoubleClick had both. Buying it gave Google the plumbing of the display market in a single stroke, including a small, underdeveloped asset called the DoubleClick Ad Exchange that would later become the single most important, cough cough… and most legally contested piece of infrastructure in the entire industry.
What I find instructive, looking back, is how fast everyone else moved once Google tipped its hand. This wasn’t a slow competitive response. It was a stampede. Imagine having nothing and then becoming the space leader in a single quarter.
Five weeks later, Microsoft announced it would buy aQuantive for $6 billion, which was an 85% premium, one of the largest in tech M&A history at the time. Microsoft wasn’t buying aQuantive because it had a brilliant display strategy. It was buying it because it could not stomach the idea of Google owning both search and display advertising uncontested. It was insurance, and it was priced like insurance, sorry my friends in the insurance business.
Yahoo had already moved, buying the rest of Right Media, the first true programmatic ad exchange for a deal valued around $850 million. AOL, then a unit of Time Warner, was assembling “Platform-A” out of behavioral and contextual ad networks like Tacoda and Quigo. And WPP, the British agency holding company, did the one move that came from outside the platform world entirely: it bought 24/7 Real Media for $649 million, because Sir Martin Sorrell had concluded that if the platforms owned the ad-serving infrastructure, the agencies would eventually be cut out of their own clients’ media budgets. Yes agency readers, your stress has been brewing for close to 20 years now.
Five companies. Five engines. Five very different bets about where the value in advertising was going to sit.
What actually happened to each bet
Here’s the part that should interest anyone working in this industry today, because the outcomes were not even close to equal.
Google won, completely. DoubleClick’s ad server became Google Ad Manager. The exchange became AdX. Over the next few years Google added the buy side (a small 2010 acquisition called Invite Media) and wired the whole thing into a single stack controlling the buyer, the seller, and the auction in between. It is the most successful adtech acquisition in history. It is also, not coincidentally, the reason the Department of Justice won a monopolization ruling against Google’s adtech business in 2025. The same vertical integration that made the deal brilliant is what made it illegal.
Microsoft lost, completely. And then came back the long way around. By 2012, Microsoft had written off essentially the entire $6 billion aQuantive purchase. The agency it acquired created conflicts it couldn’t manage; the ad server withered. Microsoft didn’t get back into this game in a serious way until it bought the remains of a different platform called Xandr, from AT&T almost fifteen years later. That’s the asset now powering Microsoft’s deal with Netflix. Shout out to BOK.
Yahoo and AOL both bet on becoming a “third pole” against the emerging Google-Facebook duopoly, and both bets failed. First inside their own companies, then again, more expensively, inside Verizon, which spent close to $9 billion reassembling AOL and Yahoo into “Oath” and recovered roughly half of it.
WPP was right about the problem and wrong about the solution. Sorrell correctly saw that agencies were vulnerable to disintermediation. But owning an ad server wasn’t the answer. The thing that actually mattered, the thing the holding companies are still fighting over, actually turned out to be data and identity, not ad-serving pipes. Sound familiar?
Why this still runs your day
It would be easy to file all of this under “interesting history.” It isn’t history. It’s the operating environment.
When you buy programmatic display today, you are very likely transacting through infrastructure that traces directly back to DoubleClick and Right Media decisions from this era. The architecture of a real-time auction matching buyers to sellers to inventory is the architecture Right Media pioneered and Google perfected.
When you read about the Google antitrust case, the one that could force a breakup of its adtech stack; you are reading about the unwinding of a structure assembled in that ninety day window. The remedy phase is, quite literally, an argument about whether decisions made in 2007 and 2010 should be reversed in 2026.
When agencies and retailers fight over who owns the customer data, you are watching the second act of the question Sorrell raised in 2007, just relocated from ad-serving to first-party data and identity. The retail media networks I work around now are, in one sense, the holding company versus platform fight playing out on a new surface, with the retailer holding a card nobody held in 2007: the actual purchase. This is important and we will build on this as well.
And every time a big strategic acquirer pays a defensive premium to keep an asset away from a competitor, which happens constantly; they are running the Microsoft aQuantive play, usually without remembering how that one ended.
The through line I keep coming back to is this: almost none of these deals were really about technology. They were about position. Where you sat in the flow of a marketer’s dollar, who you depended on, and who you could credibly threaten, that determined everything. The technology aged out in eighteen months. The position lasted decades. Google bought the position that mattered. The others mostly bought technology, or bought a position they couldn’t operate.
That lesson has not aged a day.
What’s next?
Over the next several weeks, I’m going to take each of these five engines apart, one post at a time:
1. Google / DoubleClick: The deal that won everything and is now on trial for winning too well.
2. Microsoft / aQuantive: The $6 billion write-off, and the agency-inside-a-platform trap that keeps catching new victims.
3. Yahoo / Right Media: Being completely right about the technology and completely wrong about the ecosystem.
4. AOL / Platform-A: The “third pole” dream that Verizon would later spend $9 billion proving impossible.
5. WPP / 24/7 Real Media: The agency that saw the threat first and reached for the wrong weapon.
Each one is a self-contained story, and each one has a lesson that maps directly onto a deal happening somewhere in this industry right now.
If you work in adtech, retail media, or commerce media and or you’re trying to understand why the industry is shaped the way it is then I think this series will be worth your time. Subscribe, and I’ll send the first deep dive next week.
*What did I miss, or get wrong? I’d genuinely like to hear from people who were closer to these deals than I was. Reply or drop a comment.*
PS: I was told to add a picture to this post, so here are some colored pencils.
