The second pillar in the DevOps stack is that of Integration. DevOps integration targets quality testing, feature development, and product delivery. Integration, or more specifically, Systems Integration is the process of linking together different computing or component systems and software applications physically or functionally to perform as a single consolidated unit.
Systems integration requires a wide skill set in areas such as network architecture, protocols, systems, software engineering, documentation and communication. A DevOps Engineer needs to have a unique skill set that combines that of both the traditional software developer with that of the IT engineer. Typically DevOps engineers are either developers who get interested in the deployment process of their applications or system administrators who have a passion for scripting and software development.