George Day (1980) describes model of segmentation as the top-down approach: You start with the total population and divide it into segments.

George Day(1980)将划分模型作为自上而下的方式：从整个人口出发，分成不同区间。

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The total solution provides end-to-end segmentation of a cloud computing environment while offering the economies of scale customers seek to reduce infrastructure costs.

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