This three-part paper introduces the design of the dynamic simulation platform for power market & power system（DSPMPS）. Based on the function design introduced in part one， the application programming interface is created to enable the integration of internal components， in order to support the development of server or client side simulation contents. IT technologies for visualization and networking are used to create a multi-player game environment. Event-driven and service-oriented mechanisms are applied to simplify the dynamic interactions among objects modeled in multi-time， space and targeting parameter scales. These technologies finally lead to a standardized interface of the support layer， based on which even end users can manipulate building blocks to customize applications efficiently. The platform is also open to other software platforms for interoperations through a multi-purpose network complied with international communication protocols to access multi-field contents and multi-core computation resources. The next paper will introduce the method to develop visual and interactive simulation applications for generalized congestion studies by creating and using building blocks and other properties based on the support layer.