Share of search is over: what is Share of Answer?

Share of Answer is the metric that replaces share of search. It measures how often AI names your brand when it answers the questions in your category. Where share of search asked “how high do I rank on the page?”, Share of Answer asks the only question that now matters: “when the machine answers, is it me?”

Marketers have always kept a “share” metric. Share of voice measured your slice of the advertising noise. Share of shelf measured your facings in the store. Share of search measured how much of the results page you owned. Each answered the same question for its era: how much of the visible field is mine?

The problem is that the field share of search measures is the one disappearing. Ranking is a measure of position on a page that fewer and fewer buyers ever see. You can hold a commanding share of search and still be absent from the place the decision now happens, the answer.

So the metric has to move with the buyer. Its successor is Share of Answer.

Share of Answer asks: of all the answers AI gives to the questions in your category, how many feature you at all? It is the direct heir to share of voice, but instead of your slice of the noise, it measures your slice of the recommendation. It tells you whether you are in the room when the machine speaks.

There is a sharper companion to it. Share of Recommendation asks a narrower question: when the AI actually makes a choice, names a best, builds a shortlist, tells the buyer what to get, how often is it you? Being mentioned and being recommended are not the same money. A brand can be named in nine answers out of ten and chosen in none. Share of Answer tells you that you exist; Share of Recommendation tells you whether you win.

Together, these roll into a single score, the AI Answer Index, the number that does for the answer era what share of voice did for the age of advertising. One figure, tracked over time, for how often the machine puts you forward.

The shift is not just a new metric. It is a new question. Share of search asked how high you ranked. Share of Answer asks whether, when a buyer asks the only question that matters, “what should I get?”, the machine says your name.