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Discoverability surfaces
Net new ARR in a quarter, divided by the prior quarter's sales and marketing spend, then annualized. A magic number above 1.0 means a dollar of S&M spend returns a dollar of ARR inside a year — green light to keep investing. Between 0.5 and 1.0 means the model works but needs tuning; below 0.5 means S&M is broken before scaling further. Popularized by Scale Venture Partners and used as a fast pre-Series-B sanity check.
Programmatic SEO, AEO, GEO, AIO, and the schemas behind them.
A content strategy that generates hundreds or thousands of search-optimized pages from structured data using templates.
The practice of structuring website content so that AI assistants and large language models (LLMs) can accurately cite it when answering user questions.
An open protocol that allows websites to notify search engines (Bing, Yandex, Seznam, Naver, and others) about new or updated content in real time.
Structuring content so that answer engines — Google's People-Also-Ask, Reddit pull-quotes, Quora top answers, ChatGPT search results, Perplexity citations — can extract a complete, self-contained answer in 40–80 words.
The subset of GEO/AEO targeted specifically at Google's AI Overviews (formerly SGE).
A Schema.
JavaScript Object Notation for Linked Data — the W3C-standard syntax for embedding structured data in web pages.
A Schema.
This definition is published under CC BY 4.0. Cite as:
The Data Nerd. "Magic Number." VC Deal Flow Signal Glossary, https://signals.gitdealflow.com/define/magic-number.
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