Abstract: A container set manager may determine a plurality of container sets, each container set specifying a non-functional architectural concern associated with deployment of a service within at least one data center. A decision table manager may determine a decision table specifying relative priority levels of the container sets relative to one another with respect to the deployment. A placement engine may determine an instance of an application placement model (APM), based on the plurality of container sets and the decision table, determine an instance of a data center placement model (DPM) representing the at least one data center, and generate a placement plan for the deployment, based on the APM instance and the DPM instance.

Abstract: A print engine simulator (110) is disclosed. The simulator (110) is adapted for use in a development system including a print controller (100) adapted to communicate with a print engine (106) thereby to control said print engine (106). The simulator comprises interpreter means for interpreting a communication from the print controller (100) into hierarchical communication elements, a state machine representation of the print engine (106), said state machine being responsive to the communication, and display means adapted to display at least one of the communication from the print controller (100), the hierarchical communication elements, and an associated communication from the state machine.