A service providing apparatus for providing an order management service between retail, wholesale, and purchase according to an embodiment of the present invention is a standardized order in which input order data for the order management service is converted according to preset order book conversion rule setting information a tagging processing unit for mapping characteristic information to data, standardized order data used for the order management service, and one or more databases for storing tag information mapped to the order data; an analysis unit for processing order trend analysis using order data and tag information obtained from the database; and a trend analysis service unit for providing the analysis unit's order trend analysis result to the service subscriber terminal.
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