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• Services: This describes the function this type of component provides
• References: This describes the dependencies this type of component has in order to function
• Properties: This defines configuration parameters for this type of component. This that can controls how the component program logic can behave. For example, what currency to use.
• Intent Intents or policies: This describes assumptions on how it will be used, for example security is a policythe component will behave. There are two types of policies.
  • Implementation policy- Impact the behavior of an implementation. For example, transaction, monitor and logging
  • Interaction policy - defines how the components behave with one another. For example, security.

A typical component implementation can be illustrated as:

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