Inventory Segmentation Strategy

Help me create an inventory segmentation strategy. Our inventory profile:

Total SKU count: [Number of items]
Inventory value: [Total inventory investment]
Sales distribution: [% from top items]
Demand variability: [Stable vs. volatile demand]
Lead time range: [Min to max lead times]
Service level targets: [By customer or channel]
Current inventory turns: [Annual turns]
Obsolescence rate: [% of inventory written off]

Please develop:
1. ABC analysis framework (by value/volume)
2. XYZ analysis framework (by demand variability)
3. Combined ABC-XYZ matrix
4. Inventory policies for each segment
5. Review frequency recommendations
6. Safety stock rules by segment
7. Obsolescence management approach