Waterfall enrichment runs your records through multiple data providers in sequence. If the first source cannot fill a field, the second source tries, then the third, and so on. This layered approach consistently produces higher fill rates and better accuracy than relying on any single provider alone.
The mechanics are simple, but the impact on data quality is meaningful. A single-vendor approach forces a trade-off: pick the provider with the best emails and accept weaker mobile coverage, or vice versa. Waterfall enrichment removes that trade-off by treating each field as its own problem. Unify’s breakdown of the pattern notes that B2B teams using waterfall enrichment can hit match rates of 80% or higher on contact data, compared to 40 to 60% from any single provider in isolation.
If you’re paying one vendor for full-record enrichment, you’re almost certainly overpaying and under-covering. Map your priority fields, rank providers by accuracy and cost for each one, and chain them in order.
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