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Continuous Delivery (CD), as we described in Chapter 1, Introduction to DevOps, is a set of operations including Continuous Integration (CI) and the ensuing deployment tasks. The CI flow is made up of elements such as version control systems, buildings, and different levels of validation, which aim to eliminate the effort to integrate every change in the main release line. Tools to implement functions are usually at the application layer, which might be independent to the underlying infrastructure. Even so, when it comes to the deployment part, understanding and dealing with infrastructure is still inevitable. Deployment tasks are tightly coupled with the platform our application is running on, no matter which practice, continuous delivery or continuous deployment, we're implementing. For instance, in an environment where the software runs on baremetal...