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DevOps (a clipped compound of "software DEVelopment" and "information technology OPerationS") is a term used to refer to a set of practices that emphasize the collaboration and communication of both software developers and 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.

Shared Responsibility Model

IaaS (Infrastructure) PaaS (Container) SaaS (Abstract)
Data Data Data
Application Application Application
Operating System Operating System Operating System
Virtualization Virtualization Virtualization
Infrastructure Infrastructure Infrastructure
Physical Physical Physical