Zapier, Make, and n8n are excellent for connecting two tools with a simple trigger-action flow. They are terrible for GTM data pipelines that need deduplication, identity resolution, scoring, and error handling across millions of records.
The failure mode is predictable. A no-code workflow starts simple: form submit → enrich → CRM. Then edge cases arrive: freemail addresses, subsidiary domains, duplicate companies, enrichment failures, bounce backs. Each edge case becomes another branch in the workflow. Within months, you have a spaghetti diagram that nobody understands, breaks silently, and cannot be tested.
Glue tools treat symptoms. Engineering treats causes. The difference is a warehouse, version-controlled code, schema validation, and error handling that does not depend on a visual flowchart.
We are not anti-no-code. We use n8n for orchestration triggers and webhook routing. But the heavy logic (dedupe, scoring, identity resolution) lives in SQL and TypeScript, tested and versioned. The glue connects systems. It does not replace them.
At scale, you need engineering. The question is whether you hire for it or rent it.