Doug lays out the 4 big challenges in IIoT. These include Security, Synchronization, Memory Footprint, and the Data Model. He lays out how PICMG's IIoT Specification efforts will overcome these challenges. With a focus on the sensor domain, PICMG seeks to provide plug-and-play interoperability to the "last foot" of the network. Click below to read the article.
http://picmg.mil-embedded.com/articles/tackling-challenges-industrial-iot/