Waterfall Enrichment

Overview

No single B2B data provider covers more than 60-75% of contacts. A multi-provider waterfall chains providers in sequence, each firing only when the previous returns empty. The result: 85-92% coverage at optimized cost.

This skill covers complete waterfall architecture: 3 separate waterfalls for company data, email, and phone — each with independently optimized provider ordering and verification integration.

Authoritative Foundations

• DAMA-DMBOK — Data quality dimensions — Score each provider on accuracy, completeness, validity, and timeliness, not coverage alone.
• Clay — Waterfall enrichment — Query providers in sequence and stop at the first validated result to control cost.
• Google and Yahoo — Bulk sender requirements (2024) — Validate every email the waterfall returns; bounces and complaints from bad data damage sender reputation.

When to Use