The upper mid-market, 100 to 499 people
The band that has outgrown running on instinct and has not yet built an internal strategy function, so the work gets bought rather than absorbed. About one in a hundred US employer firms sits here, which makes it small as a share and large as a number, and decisions are made by one or two people in weeks rather than quarters.
Who signs: CEO or founder, VP of marketing, head of growth, head of product, and the operating partner where a sponsor is involved.