Answer Engine Optimization (AEO) — featured snippets, PAA, AI Overviews, voice.

AEO vs GEO — what's the difference

GEO (Generative Engine Optimization) covers all surfaces where AI cites content — ChatGPT, Claude, Perplexity, Gemini chat. AEO (Answer Engine Optimization) is the subset focused on answer-extracting engines:

• Google featured snippets (the box at the top of a SERP)
• Google People Also Ask (PAA) expansion boxes
• Google AI Overviews / Search Generative Experience (SGE)
• Bing Copilot direct answers
• DuckDuckGo Instant Answer + Brave Search AI
• Voice assistants (Siri, Alexa, Google Assistant) that read one-paragraph answers aloud

The Aleyda Solis 10-characteristic checklist (the foundation of GEO) is necessary but not sufficient for AEO. Answer engines have specific extraction format requirements that go beyond "be extractable in general". A page can score 8/10 on the GEO checklist and still get zero featured snippets because the first paragraph is 120 words instead of 45.

The three featured-snippet formats

Google extracts featured snippets in one of three shapes:

Paragraph snippet (40–50 words)

The most common shape. Google grabs a single paragraph immediately after an H2 question.

• Format: single <p>, 40–50 words ideal, 60 word ceiling.
• Trigger: H2 phrased verbatim as a question; paragraph directly answers it.
• Anti-pattern: paragraph > 100 words gets truncated, which usually means demoted.

List snippet (≤8 items)

For step-by-step, ranked, or sequence queries.

• Format: <ol> or <ul>, max 8 list items, each item ~10 words.
• Trigger: intro sentence before the list saying "here are the N steps..."; H2 above shaped as a process question.
• Anti-pattern: list of 12+ items gets collapsed; Google may extract only the first 5.

Table snippet (≤5 columns)

For comparison or by-criterion queries.

• Format: <table> with descriptive <caption>, max 5 columns, first column = row labels.
• Trigger: H2 shaped as "X vs Y" or "X by criterion".
• Anti-pattern: > 6 columns breaks mobile rendering and Google won't extract.

PAA — predict the next 3 questions

People Also Ask boxes appear under most SERPs and surface 3–8 related questions a user might ask next. Inclusion in PAA = expanded SERP real estate.

Strategy:

1. Search your primary query in Google. Note the PAA questions that appear (expand the box to see all 3–8).
2. For each PAA question relevant to your page, add an H2 with the question verbatim (or near-verbatim with synonym substitution).
3. Provide a ≤50-word direct answer in the paragraph immediately following each H2.
4. Add the same Q&A pairs to a single FAQPage schema block (max one FAQ schema per page).

Compound effect: a single page answering its primary query + 5 PAA questions can occupy 3–5 SERP positions simultaneously (primary ranking + featured snippet eligibility + multiple PAA inclusions). That's the outsize ROI of AEO investment.

AI Overviews (SGE) — the seven inclusion criteria

Google AI Overviews extract content from pages that hit ALL seven of these:

1. Schema saturation: Article + Person + Organization + appropriate type-specific (Recipe / HowTo / FAQPage / Dataset)
2. Direct-answer-first paragraph: the first paragraph IS the answer to the page's primary query, in ≤45 words
3. High E-E-A-T signal: author byline + Person schema with sameAs + /about page + /methodology
4. Freshness: dateModified within 30–90 days for fact-bearing content
5. Topical authority: the page is part of a topical cluster — 3+ related pages on the same site with internal links
6. Mobile-perfect + Core Web Vitals in Good (LCP <2.5s, INP <200ms, CLS <0.1)
7. No content cloaking: JavaScript-rendered body content is invisible to AI Overview extractor; render in first-paint HTML

Hit all seven and AI Overviews cite you with explicit attribution. Hit five or six and you might be cited intermittently. Hit four or fewer and you're effectively invisible to SGE.

Voice search + Speakable schema

Voice queries are 2–3× longer than typed queries and shaped as natural language. Voice assistants extract a single 2–3 sentence answer to read aloud, so the extraction format requirement is strict.

Setup:

1. Phrase at least one H2 as a long-tail natural-language question. Example: "How long does sourdough need to ferment at room temperature?" not "Sourdough fermentation time".
2. Provide a ≤45-word direct answer in the paragraph below.
3. Wrap that paragraph with Speakable schema. The simplest approach is to add a CSS selector to your Article schema:

   {
     "@type": "Article",
     ...
     "speakable": {
       "@type": "SpeakableSpecification",
       "cssSelector": [".answer-paragraph"]
     }
   }

4. Add the class .answer-paragraph to the paragraph you want voice assistants to read.
5. Verify HTTPS + canonical URL. Voice assistants only cite HTTPS sources.

When NOT to invest in AEO

AEO has opportunity cost. Skip it when:

• Conversion-focused SaaS — clicks > snippets. A featured snippet often kills your CTR.
• Genuinely zero-click commercial queries — the snippet captures all the value, you get the brand impression but no conversion.
• Opinion / POV-driven content — the extractor strips nuance, leaving a flattened version of your point.
• Technical specialists audience — niche-technical readers rarely use voice search; SGE underweights for narrow-technical queries.

For reference, calculator, database, comparator, and content-marketing pages, AEO investment is high-leverage. For SaaS B2B + portfolio + internal-tools, it's usually a distraction.

Score your AEO surface readiness via the Citation Readiness Score — the audit's GEO Readiness dimension scores AEO formats alongside the broader Aleyda checklist.