For decades, the standard corporate playbook for growing a B2B business involved building an army of entry-level Sales Development Representatives (SDRs).

Their primary mandate was clear, if mind-numbing: sit in front of a screen for eight hours a day, copy-paste cold outreach templates, manually source leads, fiddle with CRM fields, and hope for a 1% conversion rate.

It was a numbers game built entirely on human brute force. But that era is officially over.