MQL stands for Marketing Qualified Lead, and it represents the moment a lead transitions from marketing's nurture programs to sales' pipeline. It is the formal handoff point in the lead lifecycle, and its definition directly determines how marketing and sales measure success.
MQL criteria typically combine fit scoring (right title, right company size, right industry) with engagement scoring (enough meaningful interactions to suggest buying intent). The specific thresholds vary by company but should be calibrated against historical conversion data: what combination of attributes and behaviors actually predicted pipeline creation?
The MQL definition is where marketing and sales alignment either works or breaks down. If the threshold is too low, sales receives leads that are not ready to buy and loses trust in marketing quality. If the threshold is too high, marketing is sitting on leads that could convert with timely sales outreach. Both sides need to agree on the definition and revisit it regularly.
Common MQL criteria include: lead score above a defined threshold, at least one high-intent action (demo request, pricing page visit, trial signup), demographic fit within the ideal customer profile, and recency of engagement (a lead who was active 6 months ago may need re-nurturing before handoff).
The trend in B2B is moving beyond traditional MQL models toward buying group and account-based qualification. Instead of qualifying individual leads, some companies qualify accounts when enough contacts from the same organization show intent signals. This aligns better with how B2B purchases actually happen (committees, not individuals), but it requires more sophisticated data and tooling.