求翻译：In most cases, firms will employ a combination of the three strategies to accommodate information technology requirements. The basic order entry and management software may be acquired and operated by a firm using internal computers to minimize cost and provide security. More complex software such as planning systems may be rented from ASPS. In any case, the combination of the ownership and access methods provides firms with the capability to create a comprehensive information system without extensive in-house expertise and significant initial funding.是什么意思？

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