You can package an arbitrary executable, written in any language, such as Node.js, Java, or native applications in Azure Service Fabric, and host it on a Service Fabric cluster. These type of applications are called Guest Executables. Guest Executables are treated by Service Fabric like stateless services. Service Fabric handles orchestration and simple execution management of the executable, ensuring it stays up and running according to the service description. However, since the executables do not interact with the Service Fabric platform through Service Fabric APIs, they do not have access to the full set of features the platform offers, such as custom health and load reporting, service endpoint registration, and stateful compute.