WhatsApp Message-Event Data Pipeline: India 2026 Blueprint
A data-engineering blueprint for building a WhatsApp message-event data pipeline in India 2026: webhook events to a durable queue to a warehouse on a star schema (fact_messages and fact_billing_events with conformed contact, template, campaign and date dimensions), canonical metric definitions that keep delivered, read, engaged and billable distinct, cost-allocation joins that tie billing back to campaigns and templates, DPDP-safe retention windows and pseudonymisation by data class, and a one-page exec dashboard spec of six to eight trustworthy numbers. For data teams and founders. Every Meta payload, message category and DPDP specific is illustrative and must be verified as of 2026; general engineering and compliance guidance, not legal advice.