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Vercel is the platform for frontend developers, providing the speed and reliability innovators need to create at the moment of inspiration.

How to build zero-CLS A/B tests with Next.js and Vercel Edge Config

A/B testing and experiments help you build a culture of growth. Instead of guessing what experiences will work best for your users, you can build, iterate, and adapt with data-driven insights to produce the most effective UI possible.

In this article, you'll learn how we built a high-performance experimentation engine for using Next.js and Vercel Edge Config, allowing our developers to create experiments that load instantly with zero Cumulative Layout Shift (CLS) and a great developer experience.

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