Photo by C D-X on Unsplash

Customer retention is a key feature in modern business. In the digital era, music streaming business model often provides services to users with two pricing categories: free or paid. For the companies the free users represents a revenue based on advertising, but this kind of revenue is less profitable than the one provided by the paying members.

Not only the company has to attract new users for the paid tier, but one main factor in this business is retaining the ones that already pay. …

Photo by Kyle Glenn on Unsplash


Every year since 2011 the site, Stack Overflow , one of the most famous Q&A sites of Q&A for coders, conducts a survey with its members. The survey covers a lot of information in there, salary., such as salary. country, what are the things that you consider when changing your job….

We could ask ourselves a lot of questions. But, as a aspiring data scientist from an underdeveloped country (Brazil), I couldn’t help but to inquiry myself about the differences between the developed and underdeveloped countries when it comes to their respective job markets for coders.

With this in mind…

leandro minervino

Social scientist, aspiring data scientist

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