An integration platform for managing long term processes. The platform includes a runtime engine that manages the process instances and communication with the processes to provide Web services. The runtime engine includes an execution engine module and a prediction module. The prediction module generates predictions for executing processes for inbound and outbound messages and eventual process outcomes. The predictions may be utilized when requisite data is unavailable or under defined circumstances. The prediction module utilizes process history, process description and process state data to generate relevant prediction data. The prediction module may include a learning module that applies analytical algorithms to the process history and descriptions to create models for use by the prediction module.