Generative engine optimisation for ecommerce, minus the hype

What genuinely changed

The unit of competition. A search result page shows ten links and the shopper chooses; a generated answer names two or three products and the shopper usually takes one. Being fourth used to mean reduced traffic. Now it often means none.

For an ecommerce store this raises the stakes on inclusion far more than on incremental ranking improvements.

What did not change

Accurate, specific, complete product information still wins, for the same reason it always did. No assistant recommends what it cannot describe. The GEO framing does not introduce a new lever here so much as increase the penalty for not having pulled the old one.

The part specific to Shopify

For a Shopify store the mechanism is concrete rather than theoretical. Shopify Catalog is a structured feed with published pass-or-fail requirements, and products that fail one are absent. That is a more actionable target than any amount of general GEO advice, because you can check it and fix it today.

How to tell advice from noise

Ask what would falsify it. A claim like write for answer engines cannot be tested. A claim like a zero-priced product is excluded from Shopify Catalog can be, in about a minute. Prefer the second kind, and be sceptical of anything that only becomes measurable if you buy the tool measuring it.

Why the vocabulary keeps multiplying

AEO, GEO, LLM SEO and AI SEO arrived within about a year of each other and describe substantially the same ambition. New terminology in a young field is normal; new terminology arriving faster than new evidence is a signal that the naming is doing commercial work rather than descriptive work.

A useful habit is to translate any of these terms back into a mechanism before acting on it. If the advice survives translation, it was real advice. Optimise for generative engines does not survive; a product priced at zero is excluded from the feed that ChatGPT reads does, and it can be checked in a minute.

How Endcap handles this

Endcap deliberately does not use these acronyms in its findings, because a finding should name a field and a document rather than a movement. Each check cites the Shopify page the requirement comes from, and the score is deterministic, so running the same catalog twice produces the same number.

That is a modest promise on purpose. The interesting claim in this category is not that a tool understands generative engines; it is that it can tell you which of your products are excluded and prove why.

Common questions