Sales teams are flooded with labels: MQL, SQL, HQL. Without a shared definition tied to observable behaviour, routing breaks down and reps revert to cherry-picking.
We treat warmth as the intersection of ideal customer profile fit, recent meaningful engagement, and explicit or implicit readiness for a conversation. That means looking beyond form fills at patterns such as repeat visits to pricing, stakeholder expansion within an account, and thoughtful replies to outreach.
Operationalising warmth requires lightweight scoring, not a dozen-point Rube Goldberg machine, plus weekly calibration between marketing and sales so thresholds evolve with your motion.
If your pipeline reporting cannot explain why a lead merited a meeting, it is not warm yet; it is just another row in a spreadsheet.