Mechanic 2 of 12 · XP8 (commercial mechanic grounding)
Expansion Revenue
MECH_EXPANSION_REVENUEExpansion revenue within existing accounts: capability tier upgrades, product cross-sell, seat/usage expansion. Primary mechanic for NRR and LTV.
Attribution signal
opportunity_expansion_won
The platform's commercial-execution telemetry stream emits this named signal whenever the mechanic is satisfied. Deliverables that claim impact against this mechanic must show evidence of this signal during evaluation (XP2 measurable deliverable specification).