There’s a well-known principle in business-to-consumer (B2C) marketing: Brands that have a higher “share of voice” than their “share of market” will grow. This is called the “excess share of voice” (ESOV) rule.
While market share is a widely known metric, share of voice (SOV) isn’t as clear. It’s defined a number of ways depending on the source, but it essentially means the number of conversations about a brand, divided by the number of conversations about a topic, industry or niche (i.e., whatever “market” you are measuring).
