Evidence review is one of the best first targets for advisory automation because the pain is specific. A client uploads screenshots, policies, tickets, exports, spreadsheets, and PDFs. The team has to decide whether each item supports the control requirement and testing objective.
The manual workflow is slow because reviewers are not only reading files. They are matching each artifact to the control, checking completeness, identifying stale or irrelevant evidence, drafting notes, and asking the client for replacements. AI can help with the first-pass review if the output is tied back to source evidence.
What evidence review automation should check
- Completeness: does the evidence actually address the control requirement?
- Period coverage: does it support the period under review?
- Specificity: does it show the relevant system, population, user, ticket, approval, or configuration?
- Consistency: does it conflict with the policy, procedure, control description, or other evidence?
- Reviewer readiness: can a senior reviewer see the supporting source quickly?
SOC 2 and ISO 27001 are different, but the evidence problem rhymes
SOC 2 examinations evaluate controls relevant to security, availability, processing integrity, confidentiality, or privacy. ISO 27001 uses a risk-based ISMS structure, with Annex A providing reference controls. In both cases, advisory teams still need defensible evidence that maps to a requirement, supports a conclusion, and survives review.
The automation opportunity is not to declare pass or fail. It is to pre-review evidence, classify support quality, flag gaps, and draft the reviewer note so the human reviewer can focus on judgment.
A good output format
For each control or request item, the output should show the evidence file, extracted support, reviewer note, concern category, missing information, and source reference. When evidence is weak, the system should explain why. When evidence appears sufficient, it should still show the source so the reviewer can verify.
Why this matters commercially
Every evidence gap discovered late creates client back-and-forth and senior review churn. A focused evidence review workflow can reduce that friction without changing the firm’s methodology or forcing a new platform decision.
Research notes and sources
- AICPA describes SOC 2 reports as controls relevant to security, availability, processing integrity, confidentiality, or privacy: https://www.aicpa-cima.com/topic/audit-assurance/audit-and-assurance-greater-than-soc-2
- ISO 27001:2022 Annex A is commonly summarized as 93 controls organized into four themes, selected based on risk and documented through an SoA: https://www.hicomply.com/en-us/hubs/iso-27001/annex-a-controls
- Drata’s compliance page highlights the market pain around manual evidence collection, screenshots, disconnected tools, and repeated framework work: https://drata.com/compliance