Demand side & supply side
Definition · Level 13 · Interview mechanics
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Two ways to break an estimate into factors. Demand side: how much customers use in total. Supply side: how much one seller can serve, times the number of sellers. A good answer uses one and checks it with the other.
Example
Coffees in Paris: demand side people × cups each; supply side cafés × cups each.
Where Tradecraft teaches it
Level 13 · Interview mechanics, in the lesson “Estimation (Fermi) questions”: Scope it, break it down, round every input, and sanity-check with a second route.
Related terms
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