DevOps unites software development (Dev) and IT operations (Ops) to streamline and automate the software development lifecycle, enhancing reliability and frequency of updates. DevOps engineers link these teams, ensuring efficient software creation, deployment, and maintenance. Their responsibilities include Infrastructure as Code (IaC), Continuous Integration (CI), Continuous Deployment (CD), automated testing, monitoring, logging, and security, all with a focus on collaboration. DevOps engineering benefits organizations with faster development, enhanced team collaboration, increased reliability, cost-efficiency, and security.