Consumer behavior models are the maps marketers use to understand decision-making. None of them is perfect, but each highlights a different stage of the journey — and for subscription merchants, the right model depends on what you are trying to fix. A funnel-style model helps with conversion; a stage-of-relationship model helps with retention.
The classic models
- AIDA (Attention, Interest, Desire, Action) — The original advertising model. Useful for top-of-funnel marketing.
- Engel-Kollat-Blackwell (EKB) — A more detailed five-stage model: need recognition, search, evaluation, purchase, post-purchase. The classroom standard.
- Howard-Sheth — Models the inputs (stimuli) and decision-making variables that lead to a purchase. Detailed and theory-heavy.
- Customer Decision Journey (McKinsey) — A non-linear loop instead of a funnel: consider, evaluate, buy, experience, advocate. Reflects how modern digital buyers actually behave.
- Jobs-to-be-Done — Frames purchases as customers hiring a product to do a job. Sharpens product positioning and onboarding messaging.
Which model fits subscription businesses
For subscription merchants, the Customer Decision Journey loop and Jobs-to-be-Done both fit well — subscriptions are an ongoing relationship, not a one-time conversion. The loop highlights that retention and advocacy feed back into consideration, and JTBD sharpens why customers signed up in the first place (saving time, reducing decision fatigue, ensuring supply). Both models help you design plan structures and lifecycle messaging.
Using models in practice
- Map your customer journey to the model. Where do customers enter? Where do they drop out?
- Identify the stage with the biggest leakage. Onboarding (early churn)? Mid-cycle (consumption mismatch)? Late tenure (loyalty fatigue)?
- Design interventions at the stage that matters most. Models help you target rather than spray.