How machines read a page
The methods behind AI contextual targeting — and what the public research actually says about whether it works.
Programmatic advertising, in plain English
Most explanations of this industry are written to make it sound complicated. These aren't. Start at the top and work down, or jump to whatever you're stuck on. Everything here is free, needs no sign-up, and assumes you know nothing about ad tech.
The path, in order
Six pieces, about half an hour in total. By the end you'll understand how an ad gets bought, how it gets aimed, and how you'd tell whether it worked.
- What is a DSP? — the software that buys ads for you, and where it sits in the ecosystem. Start here if you're starting anywhere.
- How an ad auction actually works — the whole journey from a page opening to an ad appearing, in about five minutes of reading.
- Real-time bidding, explained — what happens inside the roughly 100 milliseconds the auction gets.
- Contextual vs. audience targeting — the two ways to decide who sees an ad, and when each one is the right tool.
- The metrics that actually matter — eCPM, CTR, impressions: what they mean, and which ones mislead.
- Brand safety 101 — how ads are kept away from content you'd never want to sponsor.
The whole thing, in one picture
If you only take one thing from this page, take this. Everything in the path above is a closer look at one part of it.
By topic
First-party data
As third-party cookies fade, the data you own becomes the asset. How to put it to work.
What an impression is worth
How machine learning decides what to pay — prediction, bid shaping, and where the limits are.
When the buyer is a bot
Ads inside AI assistants, and agents that complete purchases. What it means for advertisers in Asia.
How we build it
Written for engineers, but readable by anyone curious about what runs underneath. We publish our own architecture, our own measurements, and our own bugs — all of it collected in AdZoic Labs.
Inside the platform
The stack, the system diagram, the security posture and the scaling approach — with a note on what we deliberately don't publish.
The jitter that never jittered
A retry delay meant to be random returned the same number every time — and the test we wrote for it passed.
How we load test
A load test gates every merge. Reading our own report properly showed it was measuring the wrong thing.
Reference, when you need a word
There's a plain-English glossary of every term this industry throws around, and a short FAQ for the questions people actually ask. New pieces land on the blog — this page stays the way in.
Still have a question?
If something here didn't land, tell us — we'd rather fix the explanation than have you nod along. And if you want to see it working on your own goals, we'll show you.
Talk to us