Debezium vs Managed CDC: A Framework for Making the Right Build-or-Buy Call

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The choice between self-hosted Debezium and a managed CDC tool is fundamentally a build-vs-buy decision, not a product comparison, according to a framework published on DEV Community. Both approaches rely on similar transaction-log capture mechanisms, so the real differentiator is who handles the operational work surrounding that capture. Modern Debezium 3.x has evolved well beyond its Kafka Connect origins, now supporting standalone deployment, Kubernetes-style management, and optional exactly-once delivery. The core CDC pipeline splits into two parts: the capture engine, which open-source tools handle well, and everything around it — schema changes, backfills, monitoring, and incident response — which defines the true cost of each path. Teams must weigh whether owning that operational burden is a productive use of their engineering resources before choosing a direction.

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