Inventory strategy is no longer one-size-fits-all. Leading distributors in glass and ceramics are designing tiered inventory strategies aligned to product criticality, vendor reliability, and demand variability. The key? Matching inventory tiers with vendor tiers—creating an agile, responsive fulfillment model.
Defining Inventory Tiers
1. Tier 1 (Critical, High-Margin SKUs):
Maintain local or regional stock with minimum disruption tolerance. Often supported by strategic vendors with performance SLAs.
2. Tier 2 (Mid-Volume, Stable Demand):
Use just-in-time or vendor-managed inventory from mid-tier suppliers.
3. Tier 3 (Low Velocity or Project-Based):
Produced to order or stocked centrally with long lead times and minimal capital exposure.
Aligning Vendor Tiers
Tier 1 Inventory → Strategic suppliers with performance-based contracts, backup sites, and digital integrations
Tier 2 Inventory → Reliable but less flexible vendors, often regional
Tier 3 Inventory → Spot-buy or on-demand partners with longer lead times or lower complexity
Benefits of Tiered Strategy
Lower total inventory cost
More targeted supplier relationship management
Improved service levels for key customers
Faster adaptability to demand shifts
KPIs to Track
Fill rate by inventory tier
Stockout frequency by vendor class
Average days of inventory per tier
Cost-to-serve by product tier
Final Word: Not all inventory is equal—and neither are your vendors. Build a tiered model that reflects real risk, real demand, and real supplier performance.
