Vendor Performance Tier Classification Flowchart automates the segmentation of suppliers into four tiers based on calculated performance scores ranging from 4.5 to 10.0. The flowchart evaluates vendors through sequential score thresholds, classifying them as Strategic Preferred OEM (9.0–10.0), Budget-Optimizing Substitute (8.0–8.5), Developmental/High-Risk (6.5–7.5), or Non-Compliant Supplier (≤4.5), with GST compliance and delivery metrics factored into ratings. This tiered approach enables procurement teams to align vendor relationships with business risk tolerance and cost optimization goals while flagging unclassified scores for manual review. Fork and customize this flowchart on Diagrams.so to integrate your own scoring criteria, compliance rules, or organizational vendor governance policies.