The shift
Computer Software Assurance isn't a rebrand of validation. It's a different way of thinking.
In 2022, the FDA issued formal guidance on Computer Software Assurance (CSA) — a risk-based approach to validating software used in FDA-regulated environments. It doesn't replace the requirement to validate. It changes how much testing rigor a system actually needs, based on its GxP risk.
Most validation providers still work the old way. Here's the difference it makes when you don't.
Side-by-side comparison
Traditional CSV vs. Computer Software Assurance
| Traditional CSV | CSA (Computer Software Assurance) | |
|---|---|---|
| Testing approach | Scripted testing for every function, regardless of risk | Testing method matched to risk — scripted where it matters, unscripted/exploratory where it doesn't |
| Documentation | Exhaustive — every step recorded in detail | Right-sized — evidence and rationale, not paperwork for its own sake |
| Vendor testing | Often re-tested from scratch | Leveraged as evidence where appropriate |
| Focus | Compliance through volume of documentation | Compliance through demonstrated critical thinking |
| Timeline | Long — every release re-triggers full validation effort | Fast — low-risk changes move quickly, high-risk changes get real scrutiny |
| Underlying goal | Prove testing happened | Prove the system works as intended, for what it's actually used for |
What doesn't change
CSA is rigor aimed correctly — not rigor removed.
CSA isn't a shortcut, and it's not less rigorous. High-risk, GxP-critical functions — patient safety, product quality, data integrity — still get the deepest scrutiny. What changes is that low-risk functions stop consuming the same time and cost as high-risk ones. You're still expected to:
- Justify your risk determinations
- Maintain traceability from requirements to evidence
- Be audit-ready at any point
- Document decisions, not just test steps
Why this matters for your release calendar
A CSV mindset can't keep up with a SaaS release cadence.
If your systems are on Veeva, Salesforce, ServiceNow, or AWS, you're likely shipping quarterly (or more often) — not once a decade. A CSV mindset applied to a modern SaaS release cadence means validation becomes the bottleneck. A CSA mindset means testing rigor flexes with actual risk, so low-impact changes don't drag your whole release behind.
How Mayona applies CSA
Four principles, every engagement.
- Scope & risk assess every system and change before deciding testing depth
- Use critical thinking, not defaults — unscripted and exploratory testing where risk allows
- Leverage vendor evidence instead of duplicating testing your vendor already performed
- Document to prove assurance, not to pad a file for an inspector who'll never read every page
Curious what CSA looks like for your systems?
We'll walk through what's on your GxP inventory and show you where a risk-based approach would actually save time.