The Internet of Things (IoT) edge computing market is tightly correlated with the IoT market in general, but despite a common misconception that edge and IoT are synonymous, these terms are mutually exclusive.
Edge computing can be described as a distributed computing approach that brings computational capabilities and data stores closer to the primary sources of data. The overarching goal of edge computing is to improve network latency. IoT is a specific kind of technology that helps to facilitate this goal.
Edge computing has been used since the late ‘90s, as outlined in this Bosch Connected World blog post. Initially, the technology was used for video and image content delivery through content delivery networks (CDNs).