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CSA

CSV vs CSA: what actually changed with FDA Computer Software Assurance

A plain-English guide to what CSA replaces, what it keeps, and how to actually shift your validation practice.

Cybroscape Technologies3 min read

Key takeaway

A plain-English guide to what CSA replaces, what it keeps, and how to actually shift your validation practice.

Part of our guide to GxP software — categories, evaluation criteria and how the platforms compare. For the detail on this specifically, see CSV to CSA.

Your shortlist criteria
Fits how you validate (CSV or CSA)Must
Part 11 and Annex 11 records and signaturesMust
Evidence you can export and keepMust
AI features you can actually validateShould
Total cost over three years, validation includedShould
Supplier evidence you can rely onNice
Weights set before demosSo the demo cannot set them for you
A fair comparison weighs the same criteria for every option, and sets the weights before the first demo. Every platform suits some teams; the shortlist is about which one suits yours.

Computer Software Assurance (CSA) is not the death of Computer System Validation (CSV) — it is a modern operating model for it. If your validation practice still starts with "which scripted tests do we need?" instead of "what is the per-requirement risk?", CSA is exactly the correction you need.

What CSA replaces

CSA replaces the reflexive, one-size-fits-all scripted-testing default. Under CSA, AI Risk Assessment decides — per requirement — whether to run a scripted test, an unscripted / exploratory test, or leverage vendor-supplied evidence. That is a fundamentally different operating model from the incumbent CSV playbook.

What CSA keeps

CSA keeps the V-model, the Live RTM, and the discipline of Audit Readiness and 21 CFR Part 11 controls. It also keeps GAMP 5 — updated to Second Edition with Agile and critical-thinking guidance layered in.

How to actually shift

The shift is operational, not philosophical. Three moves:

  • Deploy a deterministic risk engine that scores every requirement, not just every system. GxP Copilot ships this out of the box.
  • Adopt vendor-evidence and unscripted paths as first-class test strategies — see supplier qualification.
  • Move the Live RTM from a spreadsheet you maintain to a graph you derive on read.

For teams already on {} legacy tools

If you're on a legacy CSV tool that treats risk as a document, the fastest path is a CSA re-baseline of one system: score requirements, right-size test strategy, capture the effort delta. Bring that number to leadership. Our CSA services team runs these re-baselines in weeks, not quarters.

Where to go next

Explore GxP Copilot for AI-native validation, TraceDraft for source-traceable clinical documentation, or book a demo to see either on your own data.

See it on your own systemBring a URS or a system. We run GxP Copilot against it live on the call.

Sources

Primary documents referred to on this page, from their official publishers.

CSV vs CSAComputer Software AssuranceFDA CSA guidance

Keep reading

All articles
CSAHow to Move From CSV to CSA Without Restarting Your Quality SystemA practical transition from scripted CSV to Computer Software Assurance — what changes in your SOPs, what to pilot first, how to bring QA with you, and the mistakes that make CSA look like cutting corners. · 6 min readCSADefending CSA in an Inspection: The Questions and the EvidenceThe fear that stops teams adopting CSA is the audit. What inspectors actually ask when you have tested less, the evidence that answers them, and the record that makes a risk-based decision defensible. · 5 min readCSARisk-based testing under CSA: how to actually reduce scripted-test effortThe per-requirement risk model that lets you defensibly cut scripted testing on non-critical requirements. · 6 min readCSAUnscripted Testing Under CSA: What It Is, and How to Evidence ItThe most misunderstood part of CSA. What unscripted and exploratory testing actually mean, what evidence an inspector expects when there is no script, and where scripted testing is still the right answer. · 5 min readValidationChange control for computerised systems: the part that keeps validation trueChange control keeps a system validated after go-live. Its core is a real impact assessment: what the change could affect, how you will show it didn’t, and testing proportionate to that risk. · 3 min readManufacturingCleaning validation after health-based limits: what a programme needs nowCurrent cleaning validation sets carryover limits from health-based exposure limits set by toxicologists, not rules of thumb, and needs justified worst cases, recovery-tested sampling and ongoing reassessment. · 3 min readCloudCloud & SaaS validation: the shared-responsibility matrix regulators expectHow to leverage provider evidence, validate tenant configuration, and stay defensible. · 6 min readChecklistThe Complete GxP Validation Checklist — from URS to VSRA single-page checklist of every artefact, every review gate and every regulator-facing evidence element in a modern V-model validation. · 3 min read

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