DevOps is a culture and practice that aims to reduce silos between development and operations teams through collaboration, automation, and shared responsibility. It promotes a "shift-left" approach where development, testing, and deployment are integrated. The key aspects of DevOps are people, process, and technology - bringing teams together, automating processes, and integrating security into development tools and pipelines. Adopting DevOps practices like continuous integration, delivery, and monitoring can provide benefits like improved quality, performance, productivity and faster problem solving for businesses.