Audit season catches teams unprepared every year. The audit is not the problem; the lack of an evidence pipeline is. With the right setup, an audit is a review of artifacts that already exist. Without it, it is six weeks of digging through Slack for screenshots.

The artifacts you need ready

• Access reviews — quarterly snapshots of who has access to what, with manager approval recorded
• Change logs — every production change tied to a ticket, a reviewer and a deployment record
• Vulnerability scans — monthly runs of dependency, container and infrastructure scans
• Incident records — postmortems for every meaningful incident
• Vendor reviews — annual review of every subprocessor, with current SOC 2 reports collected
• Training records — security training completed by every employee, dated
• Backup tests — actual PITR tests run quarterly, evidenced
• Encryption records — TLS configs, KMS key rotation logs

The evidence pipeline

1. Wire your tooling to produce evidence as a byproduct of normal operation
2. GitHub for change logs and reviews. PR templates enforce review evidence.
3. Cloud-native logging for access reviews — IAM audit logs streamed to a long-term store
4. Dependabot + Trivy for vulnerability scans — automated, archived
5. Sentry / OTel for incident detection, your postmortem template for the document
6. HR system for training records — integrated with your security training vendor

The audit runbook

• Six months out — gap analysis against the standard, fix gaps
• Three months out — evidence walkthrough with your auditor
• One month out — final controls review, document any compensating controls
• During audit — one person owns auditor communications; the rest of the team is shielded
• Post-audit — review findings, update the runbook for next year

The mistakes to avoid

• Treating audit prep as a discrete project — it has no end, only a cadence
• Documenting things you do not actually do — easier to do than document, easier to audit too
• Relying on one person — when they leave, evidence collection collapses

Frequently asked questions

When should we start preparing for an audit?

For first-time audits, six months out. For renewals, evidence collection should run continuously — audit prep should be a verification step, not a sprint.

Can we automate evidence collection?

Most of it, yes. Access reviews, change logs, deployment records, vulnerability scans — all can come from existing tooling with the right integrations. Manual collection is the failure mode you want to avoid.

Working on something similar?

T-Square architects, builds and operates production systems for learning, AI and custom software products. Talk to a senior engineer for a second opinion.