IaC wasn't a thing because you honestly didn't need code to solve the vast majority of deployment problems. It was a configuration issue.
Not 2005, but a year later in 2006 I was using cfengine to deploy code and configuration to servers from an svn repository. The same svn repository had dhcpd configs that described pretty much every device on the network. The dhcp configs also pointed to a tftp service from which new nodes pxe booted to an installer which pulled down the node specific kickstart, and provisioned the machine.
We didn't call it infrastructure as code, but it sure fucking smells the same.
Not 2005, but a year later in 2006 I was using cfengine to deploy code and configuration to servers from an svn repository. The same svn repository had dhcpd configs that described pretty much every device on the network. The dhcp configs also pointed to a tftp service from which new nodes pxe booted to an installer which pulled down the node specific kickstart, and provisioned the machine.
We didn't call it infrastructure as code, but it sure fucking smells the same.