Across 342 occupations, measured AI exposure varies more between domains than within them. Marketing & Sales occupations carry the highest mean exposure (85th percentile across 10 roles), and Trades & Healthcare the lowest (29th across 140). Exposure is measured from Microsoft Research and Anthropic Economic Index telemetry. Domain sizes are uneven — they range from 10 occupations to 140 — so a mean drawn from a small group is a weaker signal than one drawn from a large one.
Exposure alone is the less interesting half. What separates these domains is how differently that exposure resolves: of the 342 occupations, only 102 are both exposed and see most observed AI usage follow an automation pattern, against 135 where AI reaches just as deep but the person stays in the loop.