Buyers Are Into SPO. What Will It Take To Get Sellers Onboard? | AdExchanger
Briefly

Although the buy side has largely embraced supply path optimization (SPO), the same can't be said for the sell side.The average size of an Ads.txt file among the top-grossing 10,000 publishers has tripled between 2020 and 2022, according to recent data from Jounce Media.Whereas brands and DSPs are whittling down the number of supply paths they use to purchase ad inventory, publishers are financially incentivized to work with as many partners as possible.
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