SEO Funnel: How to Match Keywords, Pages and KPIs to Each Stage

Most sites publish content without deciding which stage it serves. The result is familiar: a blog that brings visitors who never buy, and product pages that rank for nothing. An SEO funnel fixes this by applying the old purchase funnel to search. The model goes back to the AIDA sequence (attention, interest, desire, action), which Wikipedia's entry on the purchase funnel traces to sales literature from the 1920s. Search simply makes each stage visible, because people type what they need at every step. This guide shows which keywords and pages belong to each stage, how to measure the funnel and how ChatGPT, Gemini and Google's AI Overviews change it.

What is an SEO funnel?

An SEO funnel is a content plan organized by search intent and by stage of the buying journey. It answers three questions for every page: which search does it rank for, what does the visitor know at that moment, and what should they do next. It is a subset of the broader marketing funnel, limited to what organic search can capture.

The difference with a general marketing funnel is the entry point. In paid or social channels, you choose who sees your message. In search, the visitor chooses the query, and the query tells you their stage. Someone typing "why do invoices get paid late" has a problem. Someone typing "best invoicing software for freelancers" is comparing. Someone typing "[brand] pricing" is ready to buy. Reading search intent correctly is the core skill of the whole method.

The funnel also has a simple mechanical side: rank, get the click, convert. A page that is not indexed, not in the top results or not clicked never reaches the conversion step, however good its copy.

What are the stages of an SEO funnel?

Most models use three stages plus retention. The example below follows an invoicing software for freelancers.

Top of the funnel (TOFU): awareness

The visitor has a problem or a question and does not yet look for a product. Queries start with "what is", "how to", "why" or describe a symptom: "how to get clients to pay on time", "what to put on a freelance invoice". These informational keywords have the largest volumes and the lowest conversion rates. The right pages are guides, definitions, checklists and templates. The goal is reach and a first memory of the brand, so measure impressions, clicks and newsletter sign-ups rather than sales.

Middle of the funnel (MOFU): consideration

The visitor knows a solution exists and compares approaches or vendors. Queries contain "best", "vs", "alternatives", "for [audience]", "review": "best invoicing app for freelancers", "spreadsheet vs invoicing software". These commercial keywords have less volume but much stronger intent. The right pages are comparisons, rankings, use case pages, case studies and free tools. Measure clicks to product pages, demo or trial page visits and email captures.

Bottom of the funnel (BOFU): decision

The visitor is ready to act. Queries name a brand, a price or an action: "[brand] pricing", "[brand] free trial", "invoicing software for freelancers" with a buying context, "[product] near me" for a local business. These transactional keywords are few and often have small volumes, yet they produce most of the revenue. The right pages are product, pricing, service and landing pages, plus pages on branded keywords such as "[brand] reviews" or "[brand] vs [competitor]". Measure conversion rate, sign-ups, purchases and revenue.

After the sale: retention

Customers search too: "how to export invoices from [brand]", "[brand] integration with [tool]". Help center articles and tutorials that rank for these queries reduce support tickets, prevent churn and often attract new users who search for the same integration. Measure help page traffic, logged-in usage and renewals.

SEO funnel stages at a glance

For a deeper classification of query types, see our guide to types of keywords.

How do you build an SEO funnel step by step?

1. Collect the keywords of your market. Start from your products, your customers' words and the questions your sales team hears. A tool for automated keyword research speeds up this inventory and returns volumes and difficulty.
2. Tag each keyword with a stage. Use the modifiers listed above, then check the live results: if Google shows guides, the query is informational; if it shows product pages and comparisons, it is commercial or transactional. The search results page is the most reliable intent signal you have.
3. Map one page to each keyword group. List your existing pages, assign each one a stage and a main query, and spot the gaps. Two pages aiming at the same query compete with each other; merge them.
4. Fill the bottom first. Pricing, product, comparison and "alternatives" pages are closest to revenue and usually less competitive than broad guides. Estimate what each query is worth with a keyword value calculator before investing in it.
5. Then widen the top. Guides and definitions build reach and give AI assistants material to quote. Plan them in topic clusters around each product theme, following a written keyword strategy.
6. Link the stages together. Every top-of-funnel guide should link to the matching comparison, and every comparison to the product or pricing page. Internal links pass authority and show the reader the next step.
7. Give each page a call to action that fits its stage. "Start a free trial" on a definition page asks too much; a template download or a related comparison works better. On a pricing page, the trial button belongs above the fold.

How do you measure an SEO funnel?

Use two free tools, each for a different part of the funnel.

• Google Search Console covers the path before the click. Its Performance report shows clicks, impressions, click-through rate and average position, by query and by page. Filter pages by stage (for example with a URL pattern such as /blog/ for the top, /compare/ for the middle) to follow each layer separately.
• Google Analytics 4 covers what happens after the click. Mark sign-ups, demo requests and purchases as key events (the name Google now uses for what GA4 used to call conversions), then compare key event rates by landing page and by stage. Our guide to Google Analytics for SEO covers the setup.

Judge each stage on its own KPI. A guide that converts at 0.2% is not a failure if it brings thousands of visits and feeds the comparison pages; a pricing page that converts at 0.2% is a problem. Last-click reports undervalue the top of the funnel, so check the GA4 path exploration to see how many buyers first landed on a guide. Run your numbers through a conversion rate calculator per stage, and treat low rates at the bottom as a conversion rate optimization task rather than an SEO task.

Where do AI assistants fit in the SEO funnel?

AI answers mostly absorb the top of the funnel. When a question gets a complete answer on the results page, fewer people click. A Pew Research Center study published in July 2025, based on the March 2025 browsing data of 900 US adults, found that users clicked a traditional result on 8% of visits when an AI summary appeared, against 15% without one, and clicked a link inside the summary on only 1% of visits.

Three consequences for your funnel:

• The top of the funnel becomes a visibility stage. Being cited or named in the AI answer matters as much as the click. Pages with a direct answer near the top, clear definitions and sourced figures are the ones AI assistants quote. Our study of the platforms AI assistants cite most shows which sources they favor.
• The middle of the funnel moves into conversations. People now ask ChatGPT or Gemini "which invoicing tool should a freelancer choose?". If your brand is absent from that answer, you lose the comparison stage before any search. A tool for AI mention tracking shows whether your brand is named on these prompts and who is named instead.
• The bottom of the funnel stays on your site. Pricing, sign-up and purchase still happen on your pages, and visitors who come from an AI answer arrive better informed. Google says in its documentation on AI features that no special optimization is required to appear in AI Overviews or AI Mode, and that it has seen clicks from these answers to be of higher quality. Track this AI referred traffic as a separate segment in GA4.

Common SEO funnel mistakes

• Only top-of-funnel content. A blog of 200 guides with no comparison or pricing pages to link to brings traffic and no revenue.
• The wrong page for the intent. A product page aimed at "how to" queries will not rank; a long guide aimed at "[brand] pricing" will not convert.
• No path between stages. Guides without links to the next step leave visitors at the top.
• One KPI for every page. Judging guides on sales leads to deleting the pages that feed the rest of the funnel.
• Ignoring AI answers. Measuring only clicks hides the brand exposure, or the absence of it, in AI answers.

From traffic to customers

An SEO funnel works when every stage has its own keywords, its own page type, its own KPI and a link to the next stage. Start with the pages closest to the sale, widen the top with guides that AI assistants can quote, and measure each layer separately. Sorank automates the heaviest part: it finds the keywords of your market and its blog article generator writes and publishes optimized articles for every stage of the funnel, in autopilot, with internal links to your key pages.