Replication is the process of copying data from one location to another, usually in a cloud environment, to ensure high availability, accessibility, and disaster recovery. Replication helps minimize downtime and data loss by creating multiple copies of the same data that can be synchronized and updated in real time. Replication is especially useful for large databases that need to be hosted in the cloud with little to no interruption or degradation of service. Replication can also improve performance and scalability by distributing the workload across multiple servers or regions.