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DevOps is the blending of tasks performed by a company's application development and systems operations teams.
The term DevOps is being used in several ways. In its most broad meaning, DevOps is a philosophy or cultural approach that promotes better communication between the two teams as more elements of operations become programmable. In its most narrow interpretation, DevOp is a job description for an employee who possesses the skills to work as a both a developer and a systems engineer. In some industries, the term is also being used to describe a moderator between the two groups who functions as a type of scrum master to help developers and operations teams keep application lifecycle management (ALM) top-of-mind.
The necessity for tearing down the silos between development and operations has been expedited by cloud computing and the software-defined networking (SDN) movement. Traditionally in the enterprise, the application development team is in charge of gathering business requirements for a software program and writing code. The development team tests their program in an isolated development environment for quality assurance (QA) and -- if requirements are met -- releases the code to operations for use. The operations team deploys the program and maintains it from that point on. The problem with this paradigm is that when the two teams work separately, the development team may not be aware of operational roadblocks that prevent the program from working as anticipated.
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