MarTech stack complexity is exploding despite consolidation predictions. Scott Brinker, VP of Platform Ecosystem at HubSpot and founder of chiefmartec.com, reveals why AI added 1,200 new vendors while eliminating just as many in 2025. He explains how agentic AI is shifting power from marketers to customers, breaking traditional sales playbooks as buyers use AI agents to research pricing and bypass controlled journeys. Brinker outlines context engineering as the evolution beyond prompt engineering, requiring marketers to bundle instructions, data access, and tool permissions for effective AI deployment.

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