Ecommerce SEO Glossary

Plain-English definitions of the ecommerce SEO, AEO, GEO and AIO terms we use — from crawl budget and schema markup to AI Overviews and generative engine optimization.

Ecommerce SEO

Ecommerce SEO is the practice of optimizing an online store's technical foundation, category and product pages, and content so it ranks in organic search and earns qualified, purchase-ready traffic.

Ecommerce SEO service

AEO (Answer Engine Optimization)

AEO is optimizing content so answer engines — featured snippets, voice assistants and AI chat — can extract a direct, quotable answer. It relies on concise answer blocks, FAQ schema and clear question-led headings.

GEO (Generative Engine Optimization)

GEO is optimizing to be cited inside generative AI answers from ChatGPT, Perplexity, Gemini and Google AI Overviews. Entity clarity, source density and machine-readable manifests such as llms.txt drive citations.

AIO (AI Overviews Optimization)

AIO targets Google's AI Overviews specifically: structured data, authoritative first-party data, and passage-level answers that Google can lift into the generated summary above traditional results.

Schema markup

Schema markup is JSON-LD structured data that tells search and AI engines what a page is about. Ecommerce stores rely on Product, Offer, Review, FAQPage, BreadcrumbList and LocalBusiness types.

Merchant listing

A merchant listing is a Google rich result for a purchasable item. It requires price, currency, availability, shipping details and a return policy inside the Offer schema to validate without errors.

Crawl budget

Crawl budget is the number of URLs a search engine will fetch from your store in a given period. Faceted navigation, thin variants and duplicate parameters waste it; a clean sitemap index preserves it.

Canonical tag

A canonical tag declares the preferred URL for a page so duplicate or parameterized versions consolidate their ranking signals into one address. Every page here self-references an absolute canonical.

Hreflang

Hreflang tells search engines which language and country version of a page to show. Multi-region ecommerce stores need a reciprocal hreflang cluster plus an x-default fallback.

Sitemap index

A sitemap index is a parent XML file that points to multiple child sitemaps, keeping each under the 50,000-URL and 50 MB limits while making large stores faster and cheaper to crawl.

llms.txt

llms.txt is a plain-text manifest at a site's root that summarizes its structure and key pages for large language models, improving how accurately AI systems describe and cite the brand.

Core Web Vitals

Core Web Vitals are Google's page-experience metrics — LCP for loading, INP for interactivity and CLS for visual stability. Weak vitals suppress ecommerce rankings and conversion rates together.

Programmatic SEO

Programmatic SEO generates large sets of genuinely useful pages from structured data — for example region, city and state landing pages — each with unique copy, schema and internal links.

Topical authority

Topical authority is the depth and interlinking of your coverage on a subject. Search and AI engines favour sites with a complete cluster over sites with one isolated page.

Ecommerce PPC

Ecommerce PPC is paid search and shopping advertising for online stores. Paired with SEO it captures demand immediately while organic rankings compound.

Ecommerce PPC service