3 min read
Traffic allocation: when to use 50/50 and when to use 90/10
An even split gets you the fastest answer. An uneven one limits how many customers see a change you're not sure about. You can't have both.
Topic
Articles on Guardrails
Everything we have published on Guardrails: guides, experiments and what we learned along the way.
5 articles
3 min read
New vs returning visitors: two websites inside the same website
A first-time visitor needs to be convinced. A returning one needs to be let through. Showing both the same page is the most common unforced error in CRO.
3 min read
The five mistakes every brand makes in its first month of CRO
Stopping early, testing everything at once, no guardrail, changing the test mid-flight and treating a win as a fact. All five are avoidable.
4 min read
Your first A/B test on Shopify, in one afternoon
No theme edits, no app that slows your storefront, no developer. From hypothesis to live experiment on a real product page, step by step.
5 min read
How to build your first experimentation program as a new brand
You don't need a CRO team, a data warehouse or a statistician. You need a hypothesis, a segment and a way to measure. Here's the whole thing, from zero.
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