1. Requirements
   1. core/fundamental requirements
      1. metrics
   2. features
   3. categorization
2. User Requirements
   1. Timeliness
      1. end-to-end
      2. round-trip
   2. Interactivity
      1. round-trip
   3. Reliability
   4. Presentation quality
   5. Adaptability
   6. Security
      1. confidentiality
      2. integrity
      3. authenticity
   7. Affordability
   8. Functionality
   9. Supportability
   10. Future growth
       1. new application
       2. user growth
3. Application Requirement
   1. Application Types
      1. Mission-critical
         1. RMA
      2. Rate-critical
         1. Capacity
      3. Real-time
         1. Delay
            1. Non-real-time application
            2. Asynchronous application
            3. Interactive application
            4. burst
            5. bulk
            6. Real-Time application
   2. Application Groups
      1. Telemetry/Command-and-Control Applications
      2. Visualization Applications
      3. Distributed-Computing Applications
      4. Web Development, Access, and Use Applications
      5. Bulk Data Transport Applications
      6. Tele∗Service Applications
      7. Operations, Administration, Maintenance, and Provisioning (OAM&P) Applications
      8. Client–Server Applications
   3. Application Locations
4. Device Requirements
   1. Device Types
      1. Generic computing devices
      2. Servers
      3. Specialized devices
   2. Performance Characteristics
      1. Storage performance
      2. Processor performance
      3. Memory performance
      4. Bus performance
      5. OS performance
      6. Device driver performance
   3. Device Locations
5. Network Requirements