QA and software testing

Operational acceptance testing services

Ensure your software is operationally stable, secure, and ready for the real world - so it runs reliably from day one in your live environment.

Confident launches, reliable operations

Before your applications go live, it’s essential to test them under real-world conditions - ensuring they meet operational demands. That means checking they perform reliably, scale effectively, recover quickly, and stay secure under pressure. This helps you avoid costly downtime and performance issues in production.

Where user acceptance testing (UAT) focuses on user experience and functionality, operational acceptance testing (OAT) validates the operational side of things. It simulates live environments to assess performance, reliability, and support readiness - giving you confidence that your application works, not just in theory, but in practice.

  • Reduce downtime

    Identify and resolve operational issues before launch, reducing the chance of costly outages in the live environment.

  • Ensure stability

    By testing under realistic conditions, OAT verifies that your system can handle expected workloads and maintain reliable performance.

  • Launch with confidence

    Thorough operational testing confirms your system is secure, scalable, and maintainable - giving your team peace of mind at go-live.

Southern Housing

Supporting Southern Housing through multiple transformation programmes

Delivering integration and migration testing for Southern Housing’s major transformation projects.

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Our approach to operational acceptance testing

Operational acceptance testing is typically the final step before go-live, carried out in an environment that closely mirrors your production setup. This realistic approach helps uncover issues that only appear under real-world conditions.

Key areas we test during OAT:

Performance testing: to confirm your application stays responsive and stable under expected user loads, ensuring it can handle real-world traffic and data volumes.

Penetration testing: to identify vulnerabilities and validates compliance with security standards - protecting sensitive data and preventing breaches.

Scalability testing: to checks how well your application adapts to growing demand, confirming it can scale smoothly as your business grows.

Recovery testing: to simulate failure scenarios to verify disaster recovery, backup, and restore processes - helping ensure minimal downtime and data loss.

Backup and restore testing: to validate that critical data can be reliably backed up and restored, keeping business continuity intact in the event of an issue.

To find out more about our operational acceptance testing, get in touch.

Tailored testing for real-world readiness

Whether you're launching a new application, upgrading infrastructure, or preparing for a major release, we tailor OAT services to fit your setup, risks, and goals.

Our service covers architecture analysis, custom test case design, environment setup, and full test execution - checking things like start-up scripts, fail-over scenarios, and alert behaviour.

We can support you as embedded QA or as a outsourced partner - either way, we’ll deliver the insights you need to go live with confidence.

'Zoonou are able to devise a test approach that accommodates a lot of moving parts. They integrate with you and work quickly, understanding requirements to execute the right test strategy. They are dynamic and proactive offering flexibility and scalability even under tight deadlines.'

- Tom Fernandes, Associate Project Manager at The Prince's Trust

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Launch with confidence and keep operations running smoothly - contact us for a chat about our operational acceptance testing services.

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