What is DevOps ?

DevOps (mix of « development » and « operations ») is a culture and practice that emphasizes the collaboration and communication of both software developers and other information-technology (IT) professionals while automating the process of software delivery and infrastructure changes. It aims at establishing a culture and environment where building, testing, and releasing software, can happen rapidly, frequently, and more reliably.

The following video explains clearly in simple english all you need to know about DevOps.

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Venn diagram showing DevOps as the intersection of development (software engineering), operations and quality assurance