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Share of Search (SoS) measures how frequently AI engines cite your domain as a source in their responses — not just mention your brand name, but actually link to your pages.

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How it’s calculated

Share of Search = Your domain citations ÷ Total citations in all responses × 100

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SoS vs. Share of Voice

These two metrics measure different things:
Share of VoiceShare of Search
What it countsYour brand name mentioned in textYour domain URL cited as a source
What it signalsBrand presence in AI conversationsDomain authority as an AI source
You can have SoV without SoS — AI mentions your brand by name without linking to your pages. You can also have SoS without SoV — your pages are cited as a source in a response that doesn’t mention your brand directly.

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What it tells you

SoS is a secondary metric that reflects how much AI engines trust your domain as a reference. Low SoS combined with low Alignment Score usually means your content isn’t structured in a way AI systems can confidently cite.
Since zued audits weekly, SoS is a directional indicator — not a real-time measurement. It’s reliable enough to spot trends and compare engines, but take individual data points with a grain of salt.