Master A/B testing with our comprehensive guide. Learn implementation strategies, statistical analysis, common pitfalls, and integration with QA workflows. Expert insights included. A/B testing is a method of comparing two versions of a product, service, or idea to determine which performs better and drive decision-making. What Precisely Is A/B Testing ? A/B testing or split testing , in a nutshell, is a means to compare two iterations of an email, website, or other marketing asset and assess the performance differences between them. In this A/B Testing (aka split testing or bucket testing ) guide, we will discuss everything you need to know about AB Testing .