尽管多租户应用程序在经济有效性方面非常有优势，但是它们也面对许多难题，尤其是与隔离和定制相关的问题。
Although owning the great benefit of cost effectiveness, the multi-tenancy application that this article focuses on will face many challenges especially with regards to isolation and customization.
与Tivoli软件的集成确保了产品复合应用的有效性和性能。
The integration with Tivoli software ensures availability and performance for composite applications running in production.
但是，考虑到数据的可用性和有效性，任务关键型应用程序一般都不依赖于公共数据源。
Typically, though, a mission-critical application does not rely on public data sources because of concerns about availability and data validity.
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