ESET Security Management Center (ESMC) is the replacement for the ESET Remote Administrator (ERA) Server. You can install ESMC as a “virtual appliance” which will run on hosts such as VMWare or Linux/KVM/QEMU. Under the hood, this appliance is a CentOS 7 server running the Apache Tomcat web server. ESMC is implemented as a Java application that runs as a systemd service. In my experience, ESET is a solid security product, and the free ERA/ESMC provides some rudimentary endpoint management capabilities. Unfortunately, everything about ESET is confusing, from the naming of their products to their documentation. The documentation is thorough…it’s just hard to find what you’re looking for, which is usually in multiple overlapping documents that each contain part of the puzzle.