The Logging Open Service Interface Definition (OSID) is an O.K.I. specification which supports a means of reading and writing log files. OSIDs are programmatic interfaces which comprise a Service Oriented Architecture for designing and building reusable and interoperable software. Applications can use this service to record activity for a production system while implementations of other OSIDs can use the service to record detailed data during development, debugging, or analyzing performance. Many Logging implementations are simply a cover for standard logging techniques such as syslog or log4j. The use of this OSID provides an easy way to replace the logging scheme or combine multiple schemes together into a federated pattern. Logging OSID providers log4j stdout syslog Software architecture