The B2B Stack

The B2B Stack

89% of B2B Purchases Are Now Impacted By GenAI. It Remade the B2B Buying Journey - Here’s How Signals Must Rise to the Moment

Forrester’s latest research makes it clear: generative AI has officially reshaped the way B2B buying happens. But beneath the headlines lies a deeper story - one that puts signals front + centre

Mike Harty's avatar
Mike Harty
Aug 20, 2025
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The Forrester Wake-Up Call

According to Forrester’s “B2B Buying in the Age of Generative AI”, nearly nine in ten B2B buyers are already using genAI in their purchasing process.

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That number should make every CMO sit up straight.

In some quarters it’s still dismissed - ‘not good enough’, ‘not relevant to my industry’ but the data is speaking - you now need to plan a GTM that talks to agents as well as humans

GenAI isn’t just another research tool. It’s become a frontline filter: buyers use it to discover vendors, compare solutions, draft RFPs, and even refine final purchase decisions. Forrester highlights three big shifts:

  • The buying process is now conversational. Instead of wading through PDFs, websites, and sales decks, buyers are querying AI tools that deliver synthesised, vendor-agnostic insights in seconds. This to me is the most obvious use - who in their right mind are downloadi…

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