Quick Answer: Build the SLA around shared pipeline velocity outcomes, not vanity activity quotas. Define exactly what qualifies as a sales-ready lead, set time-bound response commitments for both teams, and measure the full handoff loop from first conversion to first meeting booked, then govern it weekly with one source of truth in CRM.
An SLA framework only improves pipeline speed when it converts marketing and sales from separate function owners into one revenue system with explicit inputs, outputs, and accountability. Start by aligning on stage definitions, lead qualification criteria, acceptance/rejection reasons, response-time standards, and follow-up cadence, then connect those rules to CRM automation so every lead is timestamped, routed, and audited in real time. The critical KPI is not lead volume or call count; it is speed to first meaningful sales interaction, conversion rate by source and segment, and the percentage of MQLs that become accepted opportunities within a defined window. Run weekly revenue operations reviews, track SLA breaches by team and by campaign, and continuously refine thresholds based on conversion data rather than internal opinion.