1. Hardware & Upkeep
1.1. Data center
1.1.1. Service (SLA)
1.2. Self-hosted
1.2.1. Hardware
1.2.1.1. Facilities
1.2.1.2. Servers
1.2.1.2.1. Applications
1.2.1.2.2. Databases
1.2.1.3. UPS systems
1.2.1.4. Backup systems
1.2.1.5. AC / cooling
1.2.2. Services
1.2.2.1. Bandwith
1.2.2.2. Power
2. Software & Licensing (non-CPQ)
2.1. Software
2.1.1. Virtualization
2.1.2. Databases
2.1.3. Monitoring tools
2.1.4. Network utilities
2.1.5. Anti-virus
2.1.6. Encryption
3. People, Time & Resources
3.1. FTEs
3.1.1. Support staff
3.1.1.1. Applications
3.1.1.1.1. Software updates
3.1.1.1.2. Configuration & permissions changes
3.1.1.1.3. General application maintenance
3.1.1.1.4. Monitoring
3.1.1.2. Infrastructure
3.1.1.2.1. Security breaches
3.1.1.2.2. Back-up processes
3.1.1.2.3. Security patches
3.1.1.2.4. Hardware failures
3.1.1.2.5. Monitoring
3.1.2. Related cost
3.1.2.1. Staff retention
3.1.2.2. Staff training
3.1.2.3. Infrastructure
3.2. Consultants
3.2.1. Installation
3.2.2. Implementation
3.2.3. Maintenance
3.3. Other
3.3.1. Opportunity cost
3.3.2. Missed best-practise