The PingDirectory server requires Java. For optimized performance, use Java for 64-bit architectures. See System requirements for the list of supported Java versions.
Even if your system already has Java installed, you might want to create a separate Java installation for use by the PingDirectory server so that updates to the system-wide Java installation do not impact the server.
A separate Java installation requires that you download the Java Development Kit (JDK) instead of the Java Runtime Environment (JRE) for the 64-bit version.
Support for Java 8 has been removed and server installations will fail when attempting to install with this version of Java. Install Java 11 or a later supported version before proceeding with server installation.
To install Java, go to the website for the type of Java you want to install, locate the preferred version, and follow the instructions.