Growth marketing in 2026 is being positioned less as a channel-specific practice and more as an operating model for scaling revenue. Venture Harbour defines it as an evidence-based approach oriented around maximizing business growth by working the entire funnel, in contrast with traditional marketing that it characterizes as more opinion-driven and siloed by funnel stage. In that framing, performance concentrated mainly at the top of the funnel may deliver results, but is described as less fast or less sustainable than a system that makes data-driven decisions across acquisition, activation, retention, and other downstream outcomes.

AI is a central accelerant to this full-funnel posture, but sources suggest the baseline expectation has shifted. HubSpot’s 2026 State of Marketing report argues that “AI is now table stakes,” and that the differentiator is no longer whether teams use AI, but how well they use it. The same report quantifies the perceived magnitude of the change: 61% of marketers surveyed say marketing is experiencing its biggest disruption in 20 years due to AI. Reported usage is already broad, with HubSpot saying 80% of marketers use AI for content creation and 75% use AI for media production.