Cloud, Security & Operations
Compatibility Testing
Checking that web and mobile applications work consistently across browsers, operating systems, devices, screen sizes, assistive technologies and configurations your users actually have.
Capability overview
What compatibility testing involves
An application that works perfectly in the latest Chrome on a developer's laptop may break in Safari on an iPhone, display incorrectly on a small Android screen or fail in an enterprise environment with an older browser locked by policy. Compatibility testing finds these differences before users encounter them.
We build a compatibility matrix from your analytics and customer environments rather than testing every possible combination. Testing combines cloud device and browser platforms such as BrowserStack or LambdaTest, real devices for critical checks and visual regression tools that detect layout differences automatically across browsers and viewports. Unsupported environments are listed clearly in a published support policy, so support teams can answer customer questions consistently and developers know exactly which browsers and devices they must keep working, and which they can stop worrying about.
What is included
Compatibility coverage
Cross-browser testing
Chrome, Safari, Edge and Firefox tested for layout, scripts, forms, media and storage behaviour.
Operating system coverage
Windows, macOS, Android and iOS versions checked for platform-specific behaviour.
Screen and viewport testing
Responsive layouts verified from small phones to large desktop monitors and tablets in both orientations.
Enterprise environments
Corporate proxies, browser policies, virtual desktops and older approved browser versions where business customers require them.
Visual regression
Automated screenshot comparison highlighting unexpected layout changes across environments.
How we work
How we deliver compatibility testing
Matrix definition
Priority environments selected from analytics, contracts and support ticket data.
Critical journey selection
Journeys most affected by browser and device differences chosen for coverage.
Execution
Manual and automated checks run across the matrix with evidence captured.
Issue isolation
Defects reproduced and isolated to browser features, CSS or platform behaviour for developers.
Matrix review
Supported environments reviewed periodically as usage changes.
Related capabilities
Related capabilities in Quality Engineering & Testing
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QA Process Transformation
QA Process Transformation within our quality engineering & testing services, scoped after a short discovery conversation.
Quality Engineering Consulting
An independent assessment of how your organisation builds quality into software, from requirements and test strategy to automation, environments and release decisions, with a practical improvement roadmap.
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Questions & answers
Questions about Compatibility Testing
Cannot find what you need? Our team responds to technical and commercial questions within one business day.
Ask a questionThose used by a meaningful share of your users and customers. Analytics and contractual requirements should guide the list, with a published support policy for clarity.
Only when your audience uses them. Some enterprise and government users may be restricted to older versions, but most consumer audiences update browsers automatically.
Largely. Automated tests and visual comparisons can run across many browser combinations, with manual testing reserved for complex interactions and real device behaviour.
Based on the size of the compatibility matrix, journeys covered and frequency of testing.
Next step
Discuss compatibility testing with Acmez
Share what you need to change, build, integrate or support. We will map the practical next step.