TCO (Total Cost of Ownership) = (Direct Cost + Indirect Costs + Limitations + Intangible Costs) – Benefits
Direct Costs
- Software Licenses
- Deployment Costs
- Hardware Costs
- Networking Costs
- Operational Cost
Indirect Costs
- Training Costs
- Support Costs
- Migration Cost
- Development Costs
- Maintenance Fees
- Upgrade Costs
Limitations
- Scalability
- Available Options
- Enhancements
- R&D Investment
- Performance
- Down Time
- Managebility
Intangible Costs
- Bad Publicity
- Public Perception
- Vendor Reputation
เอามาจาก http://www.narisa.com/forums/index.php?showtopic=19
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