CROExperimentation

A/B testing that actually ships (and doesn't tank your SEO)

TC
Théo Cordier
Performance Lead, SEO InsightMay 12, 20261 min read

A/B testing earns a bad reputation it mostly deserves: tests that run forever, results no one trusts, and the occasional setup that gets a site penalized for cloaking. None of that is inherent to testing — it's a process problem.

Test big swings, not button colors

Small changes need huge traffic to reach significance. Test things that could plausibly move the metric by double digits.

If you can't imagine the variant moving the number by 10%, it's not worth a test slot.

Keep Google out of the experiment

Serve variants with rel="canonical" pointing to the original, avoid redirect-based cloaking, and never show Googlebot something different from users.

html
<link rel="canonical" href="https://seoinsight.app/pricing" />
2 wks
target decision window
10%+
minimum effect worth testing
1
primary metric per test

Turn traffic into customers

We pair CRO experiments with the technical SEO that earns the traffic in the first place.

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TC

Théo Cordier

Performance Lead, SEO Insight

Théo runs experiments that respect both the conversion funnel and the crawler.