Hal Varian
The economist who designed and famously explained Google’s ad auction — and argued that extracting value from data would be the defining skill of the era.
- Name
- Hal R. Varian
- Role
- Chief Economist, Google (since 2002)
- Field
- Economics · ad auctions · data
- Known for
- Designing & explaining the Google ad auction
Who he is
Hal Varian is an American economist who joined Google in 2002 and became its chief economist. He spent decades as an academic first — he is now emeritus professor at the University of California, Berkeley — and his textbook Intermediate Microeconomics taught the subject to a generation. With Carl Shapiro he co-wrote Information Rules, a foundational text on the economics of the digital economy.
What he is known for
At Google, Varian helped shape and refine the auction that decides which ads show and what advertisers pay: a generalized second-price auction descended from the Vickrey auction. He also became its public explainer — his short talks walking through Ad Rank, the second-price rule and Quality Score remain the clearest introduction to how the system works, which is why RGM treats his auction explainer as required viewing in Paid Search Mastery.
Why he matters for paid search
Varian helped build the marketplace every Google advertiser competes in. Understanding his work explains the single most important mechanic in the channel: you don’t pay your bid, you pay just enough to beat the advertiser below you, divided by your Quality Score — so relevance lowers your cost and raises your rank at once. Everything downstream, from match-type discipline to value-based bidding, is a consequence of the auction he helped design.
In his own words
“The ability to take data — to understand it, to process it, to extract value from it, to visualize it, to communicate it — that’s going to be a hugely important skill in the next decades.”
— Hal Varian, McKinsey Quarterly (2009)Often paraphrased as “the sexy job in the next ten years will be statisticians,” the line proved prescient. For paid search it is close to a job description: the lever that wins the auction is not a bigger bid but better data — measuring the right conversions, valuing them honestly, and feeding that signal back to bidding.
Career & background
Varian earned his doctorate in economics from UC Berkeley and taught at Michigan and Berkeley, where he founded the School of Information. He joined Google as a consultant in 2002 — just as AdWords was becoming the company’s engine — and rose to chief economist, advising on auction design, policy and strategy through the era that made paid search the largest advertising channel in the world.
Usage trends
Search interest for “Hal Varian” over the last five years:
Common questions
- Who is Hal Varian?
- An American economist, Google’s chief economist since 2002 and emeritus professor at UC Berkeley, who helped design and famously explained the Google ad auction.
- Did Hal Varian invent the second-price auction?
- No — that was William Vickrey in 1961. Varian helped adapt the second-price principle into Google’s generalized second-price auction and became its best-known explainer.
- What is his most famous quote?
- That the ability to take data and extract value from it would be a hugely important skill in the coming decades — often shortened to “the sexy job will be statisticians.”
Resources & work
- bookIntermediate Microeconomics — Hal R. Varian
- bookInformation Rules — Carl Shapiro & Hal R. Varian
- videoIntroduction to the Google Ad Auction — Varian explains the mechanism
Related training
- moduleAccount architecture — opens with the auction Varian explains
- conceptThe Vickrey auction in Google Ads