Netflix is a thriving and highly developed company in the USA offering streaming movies over the Internet. It has very diverse needs and must handle very heavy traffic, and it chose Python.

Here is the blog post from the company's technical blog explaining the choice of Python.

When you look more closely, you realise that the company is also committed, as it publishes software created for its own needs on GitHub. The Priam project, for example, seems promising for my own Cassandra operational needs.