单位经济学：生命周期成本
吸引和留住潜在客户在整个客户群体生命周期内的成本。
该指标考虑了企业为客户群体中的潜在客户所 incurred 的所有成本。与客户获取成本（CPA）不同，它不仅考虑了吸引客户的成本，还包括在客户群体中留住一个扩展单位的成本。
要计算这个指标，您只需将客户群体生命周期内一个扩展单位的所有成本相加。为此，我建议记录每个扩展单位与产品的所有接触点，并注明该扩展单位来源的渠道以及该转化的成本。
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The cost of attracting and retaining a potential customer over the lifetime of the cohort.<p>This metric takes into account all costs incurred by the business for a potential client in the cohort. It differs from CPA in that it takes into account not only the cost of attracting, but also the cost of retaining a scaling unit in the cohort.<p>To calculate this metric you just need to add up all the costs for one scaling unit during the life of the cohort, for this purpose I recommend to use the fixation of all touches of a scaling unit with the product with the indication of the channel from which the scaling unit came, as well as the cost of this transition.