Source: https://www.td.org/publications/blogs/learning-technologies-blog/2014/03/do-you-need-an-xapi-learning-record-store?mktcops=c.learning-technologies&mktcois=c.managing-the-learning-function%7Ec.e-learning%7Ec.social-learning%7Ec.mobile-learning%7Ec.simulations-and-serious-games%7Ec.measuring-and-evaluating