What is Replication?

Replication, in the context of technology, generally refers to the process of duplicating data or processes across multiple systems or locations. This is often done for purposes of redundancy, fault tolerance, load balancing, or data distribution. For example, database replication ensures that changes made to a primary database are automatically copied to one or more replica databases. This enhances data availability and disaster recovery capabilities. In other contexts, it can refer to replicating virtual machines or containers for scaling applications.