Anonymous No identification of the client takes place, nor does the client hand over any credentials to the component. A component can never assume the identity of the client when calling another component. This is mandatory when a component on another computer is called.
Identity The client's identity is established by the called component, and it can use this identity to perform access control checks(see the section Access Control Lists). Note: If a COM+ application component calls a component in another COM+ application, the calling component is the client.
Impersonate The client's identity is established by the called component, and it can use this identity to access resources available to the client on the same server as the called component is running on.
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