Anti-Fragile take
A data contract says: this field means this, this format is valid, this is how fresh it must be. Without contracts, marketing's "lead" is sales' "contact" and reporting is arguments.
We write contracts as schema definitions in the warehouse, enforced on ingest.
Why it matters
Misaligned field definitions cause routing failures, bad reports, and team conflict. Contracts prevent drift.
How we build it
Zod-validated schemas on webhook ingest, freshness SLAs per field, and alerting on contract violations.