Cloud redundancy means having duplicate systems, resources, or data in place so that if one part fails, another can take over without interrupting service. This is important for ensuring high availability, fault tolerance, and minimal downtime in modern applications. Common approaches include multi-zone deployments, where resources are spread across different availability zones, and multi-region setups for even higher resilience. Organizations choose the right level of redundancy by balancing cost, performance, and reliability needs, ensuring systems remain stable and accessible without unnecessary expense.