Home Software QA Compatibility Testing
Software QA · 03
Compatibility Testing
One product, every environment. Verified across browsers, devices, screen sizes and operating systems, and validated against the legacy enterprise systems it must coexist with.
Overview
Make your product work everywhere your customers are
A product that works flawlessly on the build team’s machines can still break for a large share of real users. Different browsers render differently, devices vary in size and capability, operating systems behave in their own ways, and the enterprise systems your product must plug into rarely match the latest standards. Compatibility Testing verifies that one product behaves consistently across all of it: browsers, devices, screen sizes and operating systems, and against the legacy systems it has to coexist with.
You work with one provider answerable across security, data assurance, software QA and people, so compatibility is treated as part of a wider quality picture rather than a box ticked in isolation. Baknet is certified to ISO/IEC 27001 and ISO 9001, and the testing is run by certified, senior practitioners. Coverage is driven by your real user data, every finding comes with clear reproduction steps you can replay, fixes are verified and one retest round is included.
What it is
What it includes
Cross-Browser Testing
We validate consistent functionality and appearance across Chrome, Safari, Firefox and Edge. Rendering quirks, unsupported features and script behaviour that differs between engines are caught here, so a layout that holds together in one browser does not quietly collapse in another that a big slice of your audience uses.
Cross-Device and Responsive Testing
We verify layout and functionality across desktop, tablet and mobile. This covers how the interface reflows at different screen sizes, whether touch targets work, and whether the core journey stays usable on a small screen. Responsive breakpoints that look fine in a design tool often behave differently on a real handset, and that is where we test them.
OS and Platform Compatibility
We test across Windows, macOS, iOS and Android environments, because platform differences reach well beyond the browser. Fonts, date handling, file access, notifications and permissions all vary, and each can turn a working feature into a broken one for a specific group of users.
Legacy System Integration Testing
We validate that your product interoperates with the existing enterprise systems it depends on. Older platforms bring their own data formats, protocols and constraints, and integration points are a common source of failure during rollout. Testing them against agreed instances proves the fit before it matters commercially.
How we deliver
Delivering Compatibility Testing
A data-led path from coverage matrix to verified fixes, run across the real browsers, devices, operating systems and screen sizes your users rely on, with results reported clearly by environment.
01
Build the Coverage Matrix
We build the coverage matrix from your real user analytics, prioritising the browser, device and OS combinations your visitors actually use, weighted by traffic and revenue impact.
02
Execute Across the Matrix
We run functional and visual validation on real devices and platforms, not just emulators. Where an emulator is demonstrably faithful it can supplement the work, but the combinations that matter most are tested on the real thing.
03
Validate Legacy Touchpoints
In parallel we validate legacy touchpoints, running integration testing against the enterprise systems your product must interoperate with, using agreed test instances.
04
Report by Environment
You get environment-specific defects with full reproduction detail, prioritised by user impact. Daily updates keep you current as testing proceeds, and one retest round is included once fixes land.
It is the same disciplined path we use across the practice. See how we work on How We Engage.
Business value
Why it pays off
Every User Covered
Your visitors get a consistent experience regardless of browser, device or operating system. No segment of the audience is quietly served a broken layout or a feature that fails to load, which is exactly the kind of failure internal testing tends to miss.
Conversion Protected
Environment-specific breakages are a leading silent cause of abandonment, and they are found before customers find them. Catching them in test keeps checkout and sign-up working on the platforms where a lost session would never be explained or recovered.
Enterprise Fit Proven
Verified interoperability with legacy systems de-risks enterprise deployments and integrations. Proving the fit before rollout means integration surprises surface in testing rather than in front of a new enterprise customer during their first week.
Fewer Escaped Defects
A data-driven coverage matrix catches the combinations internal teams routinely overlook. By prioritising real traffic, testing focuses on where failures would reach the most users, so defects reaching production become the exception rather than a recurring cost.
It just works, everywhere your customers are.
What you receive on every engagement
Data-Driven Coverage Matrix
Environment-Specific Defect Reports
Reproducible Evidence
Daily Progress Updates
One Included Retest
Questions, answered
Frequently asked
How do you decide which devices and browsers to test?
From your real user analytics. The coverage matrix is built from the combinations your visitors actually use, weighted by traffic and revenue impact, so the effort lands where it protects the most sessions.
Do you test on real devices or emulators?
Real devices and platforms for everything in the priority matrix. Emulators supplement only where they are demonstrably faithful to the real environment, never as a substitute for the combinations that carry the most traffic.
Can you test against our internal legacy systems?
Yes. Legacy integration validation is part of the service, executed against agreed test instances of the enterprise systems your product must work with, so we prove interoperability without touching live operations.
What do we get back for each defect?
Environment-specific defects with clear reproduction steps and a priority based on user impact. That means your team can reproduce, understand and fix each issue without a round of back-and-forth first.
What do you need from us to get started?
A description of your product, your target audience and the systems it must work with, plus access to your real user analytics where available. From there we scope the coverage matrix and agree the environments and legacy touchpoints in scope before testing begins.
How long does a compatibility testing engagement take?
It depends on the size of the coverage matrix and the number of legacy integrations involved. Once we have scoped the environments and journeys, we give you a clear timeline up front, and daily updates keep you current as testing proceeds.
What standards and certifications do you work to?
Baknet is certified to ISO/IEC 27001 for information security and ISO 9001 for quality management, and the work is run by certified, senior practitioners. Testing follows a documented, repeatable method so results are consistent and defensible.
How does compatibility testing fit with our in-house team?
It complements rather than replaces your developers. We handle the breadth of environment coverage that internal testing rarely reaches, then hand back environment-specific defects your team can act on directly, so the two efforts reinforce each other.
Is a retest round included once we have fixed the issues?
Yes. One retest round is included, so once your fixes land we re-run the affected checks and confirm the issues are resolved across the environments where they were found. Further rounds can be arranged if needed.
Also in Software QA: Manual & Functional Testing · Performance Testing · Resilience Testing · Accessibility Testing
Let us scope it with you.
Tell us about your product, your audience and the systems it has to work with, and you will receive a clear, evidence-driven proposal for Compatibility Testing, with no obligation.