SSH is still a daily tool of sysadmins and security people. It’s just maybe not a tool for the pure machine learning people with their Jupiter notebooks who have only ever used cloud or organization resources managed by somebody else. The people managing these things and building these clusters almost certainly still use SSH and other basic Unix tools as all modern large scale machine learning like those used to train ChatGPT or DeepSeek still happens on Linux systems. Although to be honest SSH works equally well from Mac and Windows these days, and has always worked from FreeBSD. Whatever platform you choose has SSH capabilities.
SSH is still a daily tool of sysadmins and security people. It’s just maybe not a tool for the pure machine learning people with their Jupiter notebooks who have only ever used cloud or organization resources managed by somebody else. The people managing these things and building these clusters almost certainly still use SSH and other basic Unix tools as all modern large scale machine learning like those used to train ChatGPT or DeepSeek still happens on Linux systems. Although to be honest SSH works equally well from Mac and Windows these days, and has always worked from FreeBSD. Whatever platform you choose has SSH capabilities.