Which operating system is recommended for the Vault Server?

The recommended operating system for the Vault Server is Windows 2016 due to its improved security features, performance enhancements, and compatibility with the CyberArk platform. Windows Server 2016 offers a robust framework for managing data and applications securely, which is crucial for the sensitive nature of a Vault Server that handles privileged accounts and confidential information.

Moreover, Windows Server 2016 includes features such as enhanced security posture, improved scalability, and better support for hybrid clouds, aligning well with CyberArk's needs for flexibility and security. While Windows 2012, Windows 2019, and Windows 2020 may offer various functionalities, Windows Server 2016 strikes the ideal balance of being a mature, stable platform that is specifically tested and optimized for CyberArk deployments. This ensures that organizations can rely on a proven environment for their security operations.