To me xAPI stays one of the most exiting bits of Tech for understanding the learning experience of both individual and groups of learners (prior blogposts). The difficulty is to understand xAPI's mechanics, potential and reach. In come Aaron Silvers (the visionary behind xAPI) and Megan Bowe (the xAPI monger) with a nice set of slides that describe the vocabulary of xAPI, which are a set of simple words, but which definitions can be interpreted in different ways.
And after that set of words and wisdom, Aaron shared a slidedeck of 59 slides, illustrating what it takes to implement xAPI within industry or technological partners (questions for the team/tech partners, data alignment, todays adoption challenges...).
At the end of the industry/tech partner slidedeck Aaron also refers to the launch of the 2016 Data Interoperability Standards Consortium (DISC) with certification, workstreams, and a potential roadmap to implement xAPI.
Here are the links to both xAPI slidedecks: