Why Functional Infrastructure Fails Series B Due Diligence.

Founders, CTOs, and CFOs at growth-stage companies preparing for Series B or growth equity rounds. It is especially relevant for fintech, healthtech, and other regulated industries where infrastructure scrutiny is higher.

Investors review end-to-end data lineage, incident logs, reliability metrics, ownership of pipelines, and capacity allocation. Infrastructure has become a dedicated diligence track.

dbt covers transformation lineage. Investors expect visibility from ingestion through models, dashboards, APIs, and feature pipelines, along with proof of governance and freshness.

A structured log including severity, root cause, time to detect, time to resolve, owner, and resolution. Informal records like Slack threads or notes are not acceptable.

The system was functional but lacked end-to-end lineage, historical incident logs, and measurable reliability metrics. This created an “unverifiable reliability” risk.

At an $800K monthly burn, a 90-day delay costs approximately $2.4M in runway without any incoming capital.

Yes, when scoped correctly. The work is split into three phases: lineage, monitoring, and audit packaging, each with defined deliverables.

Monitoring typically surfaces hidden reliability issues within weeks. In this case, three issues were identified and resolved before re-audit.

Functional means systems run. Auditable means an external party can verify lineage, reliability, and incident handling with evidence.

Lineage tracking, incident logging, and monitoring should have been implemented well before fundraising. Most of the sprint involves creating missing artifacts retroactively.