Kaggle is a crowd-sourcing platform in which companies post their real-world data science problems in an effort to solve their problems. Kaggle will host Kaggle competitions to the public and rank the participants against one another. When large companies need help with their data science challenges, they turn to Kaggle and its community for help. The famous $1 million dollar Netflix challenge was originally a Kaggle competition. Other companies who are leveraging the Kaggle competitions to address business solutions are: Allstate, Bosh, State Farm, Red Hat, Facebook, Expedia, Home Depot, Yelp, Airbnb, Walmart, and Liberty Mutual.
This is a companion discussion topic for the original entry at https://blog.datasciencedojo.com/data-science-portfolio/