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CRO & Testing

The world’s best archive of content on conversion optimization and online experimentation (A/B, MVT, bandit, AI etc).

Statistical power

Years ago, when I first started split-testing, I thought every test was worth running. It didn’t matter if it was changing a button color or a headline—I wanted to run that test.

My enthusiastic, yet misguided, belief was that I simply needed to find aspects to optimize, set up the tool, and start the test. After that, I thought, it was just a matter of awaiting the infamous 95% statistical significance.

I was wrong.

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Marketing and AI

ChatGPT is able to answer lots of difficult questions. It’s (mostly) available 24/7. It’s disruptive and could potentially become your best employee.

This raises some other difficult questions. Will the skills you’re learning today be obsolete by tomorrow if AI can do it better? Are chatbots going to steal marketers, writers, and developers’ jobs?

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Unique value proposition

Your brand’s value proposition is a promise of value to be delivered. It’s the primary reason a prospect should buy from you.

It’s also the #1 thing that determines whether people will bother reading more about your product or hit the back button. On your site, your value proposition is the main thing you need to test—if you get it right, it will be a huge boost.

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Social login

We are always striving to boost conversion rates and encourage users to engage more.

Forward-looking businesses are using social login, also known as social sign-on, to do just that.

For the uninitiated, social login allows users to access websites using their existing social account IDs, such as Facebook, Twitter, and LinkedIn.

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