DevOps is a movement to change how IT is done by promoting collaboration between development and operations teams. It aims to reduce waste and improve delivery of software by making development and operations processes more efficient through automation, monitoring, and communication. The DevOps philosophy advocates enhancing software design with operational knowledge, building feedback loops from production into development to improve systems, and fostering a culture of shared responsibility. Key DevOps practices include accelerating the flow of changes to production through continuous integration, delivery, and deployment; adding development practices to operations like automated testing; and empowering developers to do production work to break down barriers between teams. DevOps uses tooling throughout the development and operations process to measure and monitor systems and provide feedback.