Amazon has an interesting approach to measure the success of their (myriad) TV shows.
The metric is called “
cost per first stream“.
Reuters revealed the detail behind its meaning and implementation. In short, the cost per first stream is the price (cost) to “hook” a customer on Prime (which requires a paid yearly membership to access).
Per the article, “Amazon divides a show’s production and marketing expenses by the number of people who stream that program first after signing up.” The lower the number, the better the rating — and the better the likelihood the who would get renewed for another season.