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7 QA Steps Per Test

100% Cross-Browser Validated

A broken test produces broken data. Here's how BrillMark's QA process protects every experiment — from the first line of code to post-launch monitoring.

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What is quality assurance in A/B testing?

Quality assurance (QA) in A/B testing is the systematic process of verifying that an experiment is set up correctly, functions as intended, and tracks conversions accurately — before it goes live and after.

Without QA, you risk making major business decisions based on data from a broken test. A flicker on load, a misfiring goal event, or a variation that only breaks on Safari — these are the silent killers of CRO programs.

BrillMark's QA team is embedded in the experiment lifecycle from the moment an LOE is approved — not as an afterthought, but as a core part of how every test gets built.

Why QA directly affects your A/B test results

Skipping or rushing QA doesn’t save time — it creates expensive problems downstream. Here’s what poor QA leads to:

No cross-browser testing

Variation breaks on Safari or Edge

Skewed conversion data; user experience harm

Goal tracking not verified

Conversions not firing or double-counting

Inaccurate winner declaration

No test case review

Developer misses edge cases

Multiple bug-fix rounds; delayed launches

No post-launch check

Bugs emerge after go-live undetected

Live revenue impact and bad experiment data

Wrong audience targeting

Variation shows to unintended users

Contaminated test segment; invalid results

What does our A/B test QA checklist cover?

Our QA checklist is applied to every test, scoped to its type. Here’s what each category validates:

Styling & Visual

Copy & Content

Functionality

Cross-Browser & Device

Platform & Targeting

Goals & Tracking

Styling & Visual

Font, color, and size match the design

Alignment and line height are correct

Images are loading and aligned to spec

Margins, paddings, and white space verified

Animations working as expected

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Functionality

Experiment functions as expected end-to-end

Buttons, links, and CTAs redirect correctly

Navigation (sticky, top, in-page) works

Page load time and flicker checked

Forms validate and submit correctly

Only requested elements are changed

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Platform & Targeting

Audience and device targeting is correct

URL targeting rules are accurate

Traffic split set as per test spec

Test name and variation names correct

Experiment exclusions properly configured

Running experiments integrated correctly

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Tools BrillMark uses for A/B test QA

Our QA team works across the leading platforms and testing tools in CRO. Here’s what’s in our stack:

Testing platforms

Cross-browser & device

Analytics & goal validation

Tracking & project management

Ready for experiments that actually work?

BrillMark’s QA-first approach means your A/B tests produce data you can trust — and experiences your users actually see correctly.

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What Our Clients Say About Us?

See how our Optimizely test developers have helped businesses like yours achieve measurable growth and maximize their potential.

I can’t imagine any other companies out there in a similar situation where we are that couldn’t benefit from the services that Brillmark offers.

Gayla Worrell CRO at Snap Finance

Finding competent professionals to bring conversion research ideas to life and deliver results for clients without breaking their websites was challenging – until I found Brillmark. Abdullah and his team are a group of technical A-players with whom anyone serious about CRO and experimentation should work*. I’ve collaborated with them on multiple projects, and they consistently prove they’re the real deal.

Amara Abara Founder at Conversion Central

The BrillMark team is outstanding. They managed to help us with challenging AB tests that came through and improved our overall website! They are a complete team with an advanced set of skills that always delivers, meeting the deadlines and the requirements we have asked for. Recommended, top-of-the-line people with experience all over!

Felipe Diaz E-commerce Performance Specialist at The Wild Brands

BrillMark has truly been a game-changer for our CRO projects. They’re quick, dependable, and their proven process seamlessly integrates into our workflow. They’ve become a trusted extension of our team!

Jim Huffman CEO at GrowthHit

BrillMark has been a great partner and their team is instrumental to our success. They give us a depth of technical talent and experience that we’ve come to rely on at FunnelEnvy

Arun Sivashankaran Founder & CEO at FunnelEnvy

I’ve worked with BrillMark’s developers since 2014. The abilities around high-velocity testing, quality on complex tests, and overall technical support for CRO are impressive. They’ve been my go-to team across dozens of clients and have become an integral part of how we deliver ROI

Jeremy Epperson Founder and CEO at Conversion Guides

Working with BrillMark to help our CRO agency has been a fantastic experience. The team is responsive, and thorough, and acts as an extension of our in-house team. I highly recommend them to anyone looking for quality development resources

Josh Frank Founder & Head of Optimization at Test Triggers

I’ve never worked with an A/B test development team that is more knowledgeable or as fast as the BrillMark team.

Devesh Khanal Founder at Growthrock.co

Frequently asked questions

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