Enterprise information construction can not achieve the expected goal, which may cause 2 impact. Enterprise information construction can not achieve the expected goal and the possible impact of the evaluation indicators of enterprises and application service providers.<br>The purchase mode can be tested and the system can be comprehensively evaluated before purchase. From the purchase stage to the trial operation stage, if it is not feasible, the system can be terminated at any time and claim for compensation. Moreover, the time is relatively short, the time cost and labor cost are relatively low, and the risk and possible loss are relatively small. In the purchase mode, because the application of enterprise information construction is successful or not to a large extent Depending on the actual use of commercialized software system, it may have a greater adverse impact on the commercialized software system to be purchased.<br>To sum up, the advantages of customized development mode are that it is easy to put the "top project" in place, the recognition and transaction unity of management emphasis and management innovation within the enterprise --- various resistance and negative factors are easy to be eliminated, and the information system built is well combined with the traditional management practice of the enterprise. However, due to many uncertain factors such as practical application, technology, implementation risk and implementation cycle, it is feasible to apply it to small information systems with clear functions and without involving the adjustment and change of management mode.<br>(6) The purchase mode can bring advanced modern management system to the enterprise through the application system, and then improve the overall management level of the enterprise: the information system built has obvious advantages such as high starting point, quick effect, easy upgrade, etc.: in the process of cooperation with application service providers, enterprises form and maintain long-term strategic partnership of mutual benefit, common development and common Progress.<br>Therefore, small and medium-sized enterprises do not have to follow the inherent mode of enterprise informatization development or copy the informatization development mode of other enterprises without any choice. We should combine the advantages of these two mainstream enterprise informatization modes<br>
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