Direct Answer
A marketing funnel is a stage-by-stage model of the customer journey — typically Awareness, Interest, Consideration, Intent, and Purchase — used to plan content, ads, and offers for each stage. For service businesses, the funnel is shorter than B2B SaaS and usually compresses to Awareness → Trust → Booking.
Voice answer (≤30 words)
“A marketing funnel models the customer journey by stage. Service business funnels usually compress to awareness, trust, and booking.”
Map content to funnel stage. Top-funnel: educational. Mid-funnel: comparison. Bottom-funnel: pricing and social proof.
Track funnel conversion rate stage-to-stage. The biggest dropout reveals the highest-leverage fix.