SEO vs AEO: What's the Difference and Why You Need Both

When a new term enters the marketing conversation, it often gets positioned as a replacement for whatever came before. AEO is no exception — you'll find articles declaring that "SEO is dead" and that AI search has made traditional search optimization irrelevant. That framing is wrong, and acting on it would leave your business worse off.

The more accurate picture is this: SEO and AEO serve different search channels that are both active, both growing in their respective ways, and both sending customers to businesses that have optimized for them. Understanding exactly how they differ — and what they share — helps you build a strategy that doesn't sacrifice one for the other.

What SEO Does

Search Engine Optimization is the practice of improving your website's visibility in traditional search engine results pages — primarily Google, which handles more than 90% of global web searches. When someone types "plumber near me" or "best dentist in [city]" into Google's search bar, SEO is what determines whether your business appears in the ranked list of results and at what position.

SEO works through a combination of on-page factors (the content, structure, and technical quality of your website), off-page factors (the quality and quantity of other sites linking to yours), and local factors (your Google Business Profile, reviews, and local citations). A strong SEO strategy improves your rankings for relevant search queries, driving organic traffic to your website from people who are actively looking for what you offer.

The mechanism is well understood: Google's algorithm evaluates hundreds of signals, ranks results, and presents users with a list of links. Users click. If your site earns their trust, they contact you. SEO has been the dominant framework for online visibility since the early 2000s, and Google remains the single largest source of new customer discovery for most local businesses.

What AEO Does

Answer Engine Optimization is the practice of making your business visible in AI-generated answers. When someone asks ChatGPT "Who's the best auto mechanic in [city]?" or asks Google's AI Overviews "What should I look for when hiring a contractor?" — an AI engine produces a direct response. AEO is the discipline of ensuring your business gets mentioned, recommended, or cited in those responses.

The mechanism is different from SEO in a fundamental way: there's no list of links for users to choose from. There's a synthesized answer. If the AI names your business, you exist in that conversation. If it doesn't, you're absent from it entirely — regardless of your Google rankings. As we cover in detail in our introduction to AEO, this creates a zero-sum dynamic that SEO doesn't have to the same degree.

AEO operates across five major platforms right now: ChatGPT, Perplexity, Google AI Overviews, Microsoft Copilot, and Claude. Each draws from different data sources and uses different signals to decide what to recommend. Your performance can vary significantly across platforms, which is why auditing across all five matters.

Key Differences at a Glance

Here's a direct comparison of how the two disciplines work across the dimensions that matter for a local business:

What SEO and AEO Share

The overlap between SEO and AEO is substantial, and it's why investing in one tends to strengthen the other. Both disciplines benefit from:

• Quality content: Substantive, specific, well-written content that genuinely answers questions performs better in both Google rankings and AI recommendations. Generic copy hurts you in both channels.
• Schema markup: Structured data helps Google understand your pages more accurately, and it's one of the primary signals AI engines use to identify and describe your business. Adding LocalBusiness and Service schema benefits both disciplines simultaneously.
• Authority and trust: External links (which SEO prizes) and external citations (which AEO depends on) both come from other reputable sources talking about your business. Building a reputation that generates mentions across the web serves both goals.
• Technical website health: Fast loading, mobile responsiveness, and clean site structure help with Google rankings and make it easier for AI engines to accurately read your site's content.
• Consistent NAP information: Your business name, address, and phone number being consistent across Google Business Profile, directories, and your website is foundational for local SEO and critical for AEO.

What AEO Adds That SEO Doesn't Cover

Despite the overlap, AEO has requirements that traditional SEO work doesn't address. If you've done solid SEO and assumed that's sufficient for AI visibility, these are the gaps:

The most common mistake businesses make is assuming that ranking well on Google automatically translates into appearing in AI answers. It doesn't. Google's ranking algorithm and ChatGPT's recommendation logic are different systems with different inputs. A business can rank in the top three on Google for a competitive keyword and be completely absent from AI recommendations for the same query — because their site lacks FAQPage schema, or their citations are inconsistent, or their content is keyword-optimized but not structured as genuine Q&A.

Why You Need Both in 2026

Google is not going away. Despite the growth of AI search, Google processes billions of queries per day and remains the dominant discovery channel for most categories of local business. Abandoning SEO in favour of AEO would mean ceding your position in the channel that currently drives the most search-based traffic to your site.

At the same time, the share of search behaviour that routes through AI engines is growing steadily. Users who ask AI questions instead of Googling are often higher-intent — they've moved from passive browsing to active querying and are closer to a decision. If that channel doesn't surface your business, you're losing those customers to whoever does appear.

There's also a practical argument for doing both: the work is complementary. A business that adds FAQ pages with proper schema markup for AEO purposes is also likely to see improved Google rankings, because FAQ content is genuinely useful and properly structured. A business that builds citation consistency for AEO purposes is also strengthening its local SEO signals. The marginal cost of doing both well is lower than building each from scratch independently.

The Risk of Only Doing SEO

Search behaviour is shifting. The users who were previously typing short keyword queries into Google are increasingly asking complete questions to AI engines — especially for decision-making queries like "Who should I hire?" or "What's the best option for [specific problem]?" These are exactly the high-intent queries where a business recommendation is most valuable.

A business that has invested in SEO but not AEO is in a position similar to a business that had a great Yellow Pages listing but no Google presence in 2010. The channel they've optimized for remains useful, but it's capturing a declining share of the customers who are most ready to act. The businesses that establish AI visibility now will have a durable advantage over those that wait.

As we note in our post on why businesses are invisible to ChatGPT, early movers in AEO build authority that compounds over time. Waiting to start means allowing competitors to establish that association first.

How to Start: Audit, Then Build

If you already have an SEO strategy in place, adding AEO doesn't mean starting over — it means building a new layer on an existing foundation. The starting point is always an audit that tells you where you actually stand on AI platforms right now. Without that baseline, you're working from assumptions rather than data.

An AEO audit tells you: which of the five major AI platforms mention your business, how often, in what context, and how you compare to your nearest competitors. That information drives a prioritized action plan — not a generic checklist, but a specific set of changes ordered by expected impact.

From there, the work integrates naturally with your existing SEO efforts. Adding FAQ pages, improving schema coverage, and building citation consistency all support both disciplines. The goal is a presence that's visible in both the link-based search results your existing customers use and the AI-generated answers your future customers are increasingly relying on.