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These services are invoked whenever there is a need to orchestrate or adapt a certain transaction. If they are not needed the core interoperability layer component will just call the domain service directly. Designing these Orchestrators may use other adapter service to send messages to other services.  Designing these orchestrators and adapters as independent services allows additional logic or business processes to be added to the HIE as the need arises. This allows the architecture to grow as the environment changes. 

Features of a central component

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