求翻译：A second strategy is to outsource information management to a third party with the competency and expertise to implement, maintain, and manage such technologies. Firms such as International Business Machines (IBM), Electronic Data Systems (EDS), and Accenture provide comprehensive information technology outsourcing and consulting. The hardware and software can be dedicated or shared with other clients of the service provider. In either case, both the hardware and the data are reasonably secure. The benefits of outsourcing are that operational responsibility is assigned to a specialist that has extensive resources to focus on both hardware and software implementation and operations. In addition, such management firms typically offer backup services by sharing substantial resources across a number of clients. The major disadvantage of using a third-party service provider is increased variable cost. To provide the service, a profit margin must be added to the cost of equipment and software. However, the cost differential may be more than justified since the service provider should be in a position to achieve economies of scale by sharing resources and personnel across multiple clients.是什么意思？

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