> I think the biggest thing is that the minimum extra spend if you want in house managed infra is basically the salary of a full time sysadmin + hardware costs.
The cloud promises to make admin tasks easier, however I have never seen it eliminate the role of a sysadmin in practice. In my experience, most organizations that run their infra on a cloud still have dedicated admin roles (often called "DevOps" or infra teams).
Hence, I think that the claim that a sysadmin's salary is an extra expense for self-managed infrastructure is exaggerated. You may need more sysadmins for achieving the same features in a self-managed setup compared to the cloud, but it is not a linear scale.
The cloud promises to make admin tasks easier, however I have never seen it eliminate the role of a sysadmin in practice. In my experience, most organizations that run their infra on a cloud still have dedicated admin roles (often called "DevOps" or infra teams).
Hence, I think that the claim that a sysadmin's salary is an extra expense for self-managed infrastructure is exaggerated. You may need more sysadmins for achieving the same features in a self-managed setup compared to the cloud, but it is not a linear scale.