Ad Spending for 100 Largest BtoB Marketers Nears $5B

By Ad Age Staff Published on .

The 100 largest business-to-business advertisers last year spent an estimated $4.9 billion on U.S. b-to-b ads. And the fastest-growing b-to-b measured medium last year was internet display advertising, where spending for the BtoB 100 surged 25.3% over 2012. The BtoB 100's spending on internet display ads last year passed spending in magazines. If you are looking for an agency partner to help you direct your b-to-b spending, consider these LookBook partners.

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