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The main and obvious difference in this scenario is lack of the IaaS layer, and hence the scope of the Infrastructure Automation is limited to only two layers: Site/Physical and CaaS. From the lifecycle ownership perspective, the CaaS layer is now shared not only between the Cloud Provider and the Cloud Consumer (for the same reasons as in the CaaS on IaaS scenario) but also with the Infrastructure Owner. The latter fact is related that in the bare metal deployments, because of the lack of the hypervisor, the CaaS layer is much more dependent on the underlying physical infrastructure.
Essential foundation functional blocks for Infrastructure LCM automation:
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