On-site data utilization is the key to business transformation in the industrial field. Now that the importance of systems is increasing, how should edge computing be selected and operated? Industrial sites face various challenges such as stable operation, performance, security measures, operation and maintenance required to analyze and utilize large amounts of data in real time. In this presentation, we will introduce edge computing for industrial use, which has a proven track record in many companies, with features such as "always-on," "zero touch," and "long-term maintenance," along with successful examples.