The Marketing Funnel, Explained: How Strangers Become Customers (and Keep Coming Back)
TL;DR: A marketing funnel is the journey a stranger takes from first hearing about you to buying — and, done well, to buying again and recommending you. Most people who find your business won't buy on day one, so the funnel's real job is to catch the ones who aren't ready yet and move them along one stage at a time.
What a marketing funnel actually is
The funnel is a 120-year-old idea with a stubbornly useful shape. In 1898 the American advertising pioneer Elias St. Elmo Lewis described the stages a buyer passes through — attention, interest, desire, action — and the model has been redrawn countless times since. The name captures the one thing that never changes: far more people enter at the top than come out of the bottom.
That narrowing isn't a flaw to fix. It's the nature of buying. Someone who has just discovered your café, your accountancy practice or your online shop is not in the same frame of mind as someone with their card already out. Treat them as if they are and you'll waste money shouting "buy now" at people who have never heard your name.
The four stages, in plain English
Most useful funnels have four stages. Awareness is the top: people discover you exist — through search, social, word of mouth, an ad or a shelf. Consideration is the middle: they weigh you up, read reviews, compare you to the alternatives and decide whether you're worth the risk. Conversion is the narrow neck: they buy. Retention and advocacy is the stage most small businesses forget — where a one-time buyer becomes a repeat customer and, better still, someone who recommends you.
A quick way to picture it: Awareness is "I've heard of them." Consideration is "I'm thinking about them." Conversion is "I bought from them." Advocacy is "You should buy from them too."
Why every funnel leaks — and why that's normal
Every funnel leaks at every stage, and the leaks are bigger than most owners expect. The clearest example is the online shopping cart. According to the Baymard Institute, which pooled 50 separate studies published between 2006 and 2025, the average documented cart-abandonment rate is 70.22% — roughly seven in ten people who add something to their basket leave without paying.
That figure is worth sitting with. These aren't cold strangers; they're people far down your funnel who chose a product, began checkout and still walked away. If you only ever measure the final sale, you never see them. If you map the funnel, you can spot exactly where they drop — and do something about it, whether that's a clearer delivery promise, a guest checkout or a simple reminder email.
How to build one without overcomplicating it
You don't need expensive software to run a funnel. You need one action and one number for each stage. At awareness, pick a single repeatable way to get found — a weekly social post, local SEO, a Google Ads campaign — and watch your website visitors. At consideration, give people a low-commitment next step, such as an email sign-up in exchange for something genuinely useful, and track subscribers.
At conversion, strip the friction out of your checkout or enquiry form and count sales or leads. At retention, set up one simple follow-up — a thank-you sequence or a loyalty perk — and watch how many customers come back. The discipline is resisting the urge to measure everything: one metric per stage tells you where the funnel is leaking, which is the only thing you really need to know this month.
Match the message to the stage
The most common small-business mistake is aiming "Buy now, 20% off!" at people who have never heard of you. Hard-sell offers belong at the bottom of the funnel, not the top. Earlier on, your job is to be useful and memorable: answer the questions your customers are Googling, show your work and build a little trust. Save the discounts and urgency for the people already considering you — a funnel is really just a reminder to say the right thing at the right moment.
Funnel, flywheel, or "messy middle"?
You'll hear marketers say the funnel is dead — that real journeys loop and zig-zag, that Google calls the research phase a "messy middle," that a "flywheel" better captures how happy customers feed new ones. They have a point: nobody moves through the stages in a tidy straight line. But the funnel survives because it's a planning tool, not a literal map. It forces you to ask the two questions that matter — where are people getting stuck, and what do they need from me next — and those never go out of date.
Quick FAQ
What are the four stages of a marketing funnel?
Awareness (people discover you), consideration (they weigh you up), conversion (they buy) and retention or advocacy (they buy again and recommend you). Some models split these further, but four stages are enough to plan around.
What's the difference between a marketing funnel and a sales funnel?
They describe the same journey from different seats. "Marketing funnel" usually covers the earlier stages — getting found and building interest — while "sales funnel" focuses on turning qualified leads into closed deals. In a small business they're often the same funnel with one owner: you.
Is the marketing funnel still relevant in 2026?
Yes, as a planning framework. Real customer journeys are messier than a neat triangle, and AI search and social discovery have scrambled the order. But the core logic — different people need different messages depending on how ready they are to buy — is as true as ever.
How do I know where my funnel is leaking?
Pick one metric per stage and compare the drop-offs. If lots of people visit but few enquire, your consideration stage is weak; if many add to basket but few pay, your checkout is the problem. You can't fix a leak you haven't located.
Most small businesses I meet don't have a traffic problem — they have a funnel problem. They're paying to bring in strangers, then expecting them to buy like old friends. Map the journey, fix the stage that's leaking, and the same budget suddenly works twice as hard. — Daniel Nikolla, Founder of Merx Marketing
The takeaway: a funnel doesn't conjure demand out of thin air — it stops you wasting the demand you've already paid for. Find your leakiest stage, fix that one first, and everything upstream starts to pay off.
Which stage of your funnel do you think leaks the most — getting found, getting considered, or closing the sale?
If you would like to know more about this topic, please contact us on danieln@merxmarketing.co.uk
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Written by Daniel Nikolla, Founder of Merx Marketing Ltd and Marketing Minute
