Redundancy and Failover vs DevOps vs Continuous Deployment

In the realm of software development and deployment, redundancy and failover, DevOps, and continuous deployment are three distinct approaches that aim to ensure high availability and efficiency. While companies like Netflix and Amazon have successfully implemented redundancy and failover, others like Google and Microsoft have adopted DevOps and continuous deployment. This comparison will delve into the pros and cons of each approach, referencing industry leaders like Docker, Kubernetes, and Jenkins.