Quantitative metrics come from what actually happened on your POs; qualitative ratings come from you. The composite blends both.
Composite score maps to tier: A at 85 or above, B from 70 to 84, C from 55 to 69, D below 55. Recommended action follows tier and spend: expand for top-tier, high-spend vendors, maintain for steady A/B performers, re-engage for tier C, and diversify away or exit for tier D depending on how much you’re spending with them.
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