- The OMG publishes many additional specifications. Many ORB vendors provide these as additional add-on components. The more common and useful ones include:
- Naming Service
- Important for bootstrapping and configuration
- Transaction Service
- Very useful for distributed applications
- Event Service
- Asynchronous coupling of objects
- The OMG has documents describing many more services
- Some of these specifications have dubious utility
- Lack of implementations is a good indicator
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