Tectia SSH Server is a commercial SSH server solution developed by SSH Communications Security, the company that originally created the SSH protocol. It provides encrypted remote access and secure file transfer capabilities for enterprise environments, including support for IBM z/OS mainframe platforms via a dedicated variant (Tectia SSH Server for IBM z/OS). The product falls under the Secure File Transfer & Encryption category within SSH Communications Security's product portfolio, alongside quantum-safe encryption offerings. It enables organizations to establish encrypted SSH connections for remote administration and secure file transfers (SFTP/SCP) across servers and mainframe systems. Tectia SSH Server is positioned for enterprises requiring strong cryptographic controls over remote access and file transfer workflows, with compliance and audit requirements in mind. It is offered as a standalone server component and is complementary to SSH Communications Security's broader access management and key management ecosystem, including PrivX PAM and PrivX Key Manager.