Patent ID: 7783468

Claim:
A computer implemented method for modeling information system architecture of an enterprise, comprising: obtaining a business process design, the business process design describing a plurality of business processes and defining a set of corporate requirements and business service requirements for each business process; constructing a multi-layer mathematical model of architecture of an information system of the enterprise, the information system architecture supporting the business process design, layers of the multi-layer model comprising a business layer, an application layer, and a technology layer; modeling performance metrics for each layer of the multi-layer model of the information system architecture, said modeling including dimensions of cost, quality of service and throughput; from said modeled performance metrics, producing a business ephemeris having a predetermined lookup table cross referencing state of the enterprise information system architecture to remedy, the state being a plurality of data points associated with the mathematical model at a given time, the data points including quality of service, cost and throughput, the remedy being a suggested modification to the information system architecture responsive to the associated state; and monitoring performance of the information system architecture for on-line and off-line analysis of operations of the information system architecture against the business ephemeris.