After Wall Street and investors soured on adtech M&A, the sector is hot again.

Even as advertisers slashed their spending in the economic downturn, the rise of streaming TV and online shopping have benefitted adtech companies that help advertisers and marketers buy and sell ads.

Adtech stock gains by companies like The Trade Desk, Magnite, LiveRamp, and Criteo and the rise of special-purpose acquisition companies (or SPACs) have given rise to more adtech IPOs like PubMatic and fueled rumors of DoubleVerify IPOing early next year. And the death of third-party cookies has advertisers scrambling to prepare for a world where ad targeting and measurement will get harder.

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