Market Sizing
Calculates defensible TAM, SAM, and SOM figures using reconciled top-down and bottom-up financial modeling.
Market Sizing is an analytical product management skill grounded in Bill Aulet's Disciplined Entrepreneurship framework that enables teams to rigorously size business opportunities. Rather than relying on guesswork, it builds independent top-down market estimates from published totals and bottom-up figures from unit economics and target buyer populations. The skill reconciles discrepancies between the two approaches, validates realism against incumbent market shares and implied CAGRs, and highlights load-bearing assumptions to equip founders and product managers with board-ready, defensible numbers for PRDs, pitches, and strategic investment decisions.