Modern database replication ensures real-time data availability for analytics, continuity, and scalability by copying databases across destinations like warehouses, lakes, or other databases. It reduces latency, improves disaster recovery, and lightens server load but poses challenges in consistency, schema drift, and resource demands. Strategies include full replication, which is reliable but resource-heavy, and incremental replication using change data capture methods like log-, timestamp-, or trigger-based tracking. Best practices emphasize ELT over ETL, schema drift handling, secure connections, and governed movement with access control. Fivetran enables automated, log-based CDC replication at scale with compliance, encryption, and observability.

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