Dynatrace OneAgent can be installed on all major operating systems and frameworks. But what if you use a technology that can't be monitored out-of-the-box with OneAgent? This is where ActiveGate plugins come in. With ActiveGate plugins you can integrate any remote technology that exposes an interface into your Dynatrace monitoring (for example, PaaS technologies, network devices, cloud technologies, or anywhere else OneAgent installation isn't an option. ActiveGate plugins (aka "Remote plugins") are executed on Environment ActiveGates and can acquire metrics and topology from remote sources.
Dynatrace supports several technologies through ActiveGate plugins, but additionally offers a Plugin SDK that allows you to create your own custom plugins.