Redundancy vs Failover vs DevOps & Continuous Integration: Complete

Redundancy, failover mechanisms, and DevOps/CI practices represent three complementary but distinct approaches to building resilient cloud systems. While redundancy focuses on duplicating critical components (as documented in research using Stochastic Petri Nets and Apache CloudStack), failover ensures automatic recovery when failures occur, and DevOps/CI enables rapid iteration and deployment. Together, they form the foundation of high-availability architectures used by companies like Netflix, Amazon, and Google.