One of the big wins with Industrial Information of Things (IIoT) is the possibility to do predictive maintenance simpler. With the data at hand, which could mean in the cloud or at the edge, the data is accessible at all times from almost anywhere. This means it is possible to elaborate on the data to find new ways of how to look at the machine or the process. Predictive maintenance at its simplest implementation is just a way to detect anomalies.
Read more here