Question 1

How much traffic do we need before A/B testing makes sense?

Accepted Answer

It depends on your current conversion rate and the size of the effect you want to detect, not on a magic session count. As a rough guide, a page with a low single-digit conversion rate needs hundreds of conversions per variant to detect a realistic improvement, which many sites simply cannot supply in a reasonable window. If your numbers do not support a powered test, we will tell you and use qualitative research and sequential improvements instead — that is the honest answer, not a sales one.

Question 2

How long does a single test run?

Accepted Answer

Long enough to reach the pre-calculated sample size and to cover complete business cycles, which in practice usually means two to four full weeks. Stopping the moment a result looks significant is one of the fastest ways to fool yourself, because early data swings wildly. We set the duration before launch and stick to it unless a guardrail metric is being harmed.

Question 3

What happens if a test loses?

Accepted Answer

It gets documented and we keep the original. A substantial share of tests lose or come back inconclusive across the industry, and any agency showing you an unbroken run of winners is selecting what it reports. A losing test still buys you something real: it removes an expensive assumption and usually sharpens the next hypothesis.

Question 4

Will you redesign our website?

Accepted Answer

Only where the evidence points there. Most conversion gains come from clarity, sequence and friction — what a page says first, what is asked for, what is missing at the moment of doubt — rather than from a new visual language. Where a full rebuild is genuinely the right answer we say so, but we would rather validate the change in pieces than gamble your revenue on one redesign launch.

Question 5

How do you measure results honestly?

Accepted Answer

We agree the primary metric before the test, ideally revenue or qualified leads rather than a proxy like clicks, and we set guardrails so an improvement in one number cannot hide damage elsewhere. Results are reported with the sample size, the run time and the uncertainty attached. We also reconcile against your back office, because analytics and actual orders rarely match exactly once consent banners and ad blockers are in play.

Question 6

How does CRO relate to our Google and Meta ad spend?

Accepted Answer

Directly — conversion rate is the multiplier on every click you buy. Improving the page a campaign lands on lowers cost per acquisition without touching bids, and better on-site conversion also feeds cleaner signals back to the ad platforms' optimisation. For most advertisers, fixing the destination is cheaper than raising the budget.

Question 7

Which tools do we need to buy?

Accepted Answer

Usually less than expected. GA4, Google Tag Manager and Google Search Console cost nothing, and capable session-recording and heatmap tools have free tiers that carry most sites. A paid testing platform only becomes necessary once your volume genuinely supports frequent testing; where third-party scripts are restricted, we can capture click and scroll behaviour first-party instead.

Question 8

Will testing slow our site or cause flicker?

Accepted Answer

It can if implemented carelessly, and that alone has ruined many tests by degrading the experience for the variant group. We prefer server-side or edge-rendered variants where the stack allows, keep the client-side payload minimal, and check Core Web Vitals for both variants before launch. If a test cannot be run without hurting performance, it is not worth running.

Question 9

How soon will we see results?

Accepted Answer

The measurement audit and research phase typically produce actionable findings within the first few weeks, and some of those are straightforward fixes that ship without a test. Testing itself compounds slowly: value comes from a steady sequence of decisions over months, not from one dramatic win. Anyone promising a specific percentage uplift before seeing your data is guessing.

Question 10

What do you need from us?

Accepted Answer

Analytics and tag manager access, a view of orders or leads so results can be reconciled, and someone on your side who can answer questions about customers and approve changes. Access to support conversations and sales calls is enormously valuable and usually overlooked. Beyond that, the main requirement is a willingness to let evidence overrule internal preference.

How can we help?

Conversion Rate Optimization (CRO)
FAQ

Helpful
information

Getting Started

Timeline

Pricing

Support

Still have questions?

Conversion Rate Optimization (CRO)FAQ

Helpfulinformation