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Model
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AppServer operating modes
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How clients interact with Web service
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Session managed
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Stateless
State-aware
State-reset
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Client maintains a persistent connection to the AppServer, maintaining session context between requests for a single client application. This allows a client to carry out complex transactions that span multiple requests, but often requires extra code management, on the part of the client, for each request.
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Session free
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State-free
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Client sends requests without any connection to an AppServer. This allows more clients to simultaneously access the Web service with minimal code management, but each request returns a complete result that has no certain dependency on the results of any previous requests.
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