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In the CaaS on IaaS scenario, the Infrastructure Automation scope covers the Site/Physical layer, IaaS layer and CaaS layer. From the ownership/management role lifecycle perspective (the left hand side of the diagram), Site/Physical layer is entirely owned by the Infrastructure Owner, the virtualised infrastructure layer (IaaS) is shared between the Infrastructure Owner and the Cloud Provider, who can be the or different parties. Similarly, The container orchestration layer (CaaS) is shared between the Cloud Provider and the Cloud Consumer / Tenant. These relationships can be illustrated by a situation, where a telecommunications provider owns the physical infrastructure on which an external cloud provider runs the virtualisation software. Sharing CaaS layer between the Cloud Provider and the Cloud Consumer reflects the fact that the container management/orchestration software like Kubernetes is lifecycled by the Cloud Provider (for instance when scaling out containers) but also by the Cloud Consumer because of the very close relationship between an application and a container in this model, where for example destroying application means also destroying related containers.
Essential foundation functional blocks for Infrastructure LCM automation:
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