A Brief History of Online Advertising
Hubspot
SEPTEMBER 12, 2016
To put that in perspective, the average clickthrough rate on display ads today -- 22 years later -- is closer to 0.06%. Doubleclick emerged on the scene as one of the first ROI tools for banner ad campaigns. Doubleclick's success also gave rise to a new pricing model for online advertising: Cost per impression (CPM).
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