Seeing systems administration as multiple layers and multiple towers

SRE professionals follow a technical generalist model. By generalist, we meant to say they have deep knowledge of multiple technology domains. We saw in this chapter that they are also well versed in the processes and governance model that support IT operations and development. We will represent the site reliability engineering body of knowledge for systems and infrastructure management as a matrix.

Figure 6.2 – Matrixial IT systems and an infrastructure body of knowledge

You can see in Figure 6.2 that systems administration happens at any phase of the cloud adoption ladder, from traditional on-premises and cloud-hosted to cloud-enabled and cloud-native IT. Moreover, ITSM processes permeate not only IT models but also technology towers.

Conceptually speaking, a DevOps pipeline and its processes can be deployed to a traditional IT environment (mostly based on bare-metal and VM...