Modeling Architectures

Analyze and Predict Performance Availability Queuing Back of the envelope calculations Computation budget allocation Simulation Availability Failure rate and recovery time

Other Attributes – less well measured Modifiability Coupling and cohesion metrics Still requires empirical experience Testability Component interaction metrics Coverage measures in development phase

Prototyping and Development Prototypes can be used for evaluation During development – test early and often Skeleton systems

What you can’t measure, you can’t control