A/B testing is a method used to compare two versions of a digital product or marketing strategy to determine which one resonates best with the audience. It's crucial for businesses to execute this technique meticulously, as flawed tests can lead to misleading results and poor business decisions. The precision and validity of experiment setup, traffic allocation, and interpretation are paramount in A/B testing. This guide delves deep into the world of A/B testing, focusing on its core concepts, the significance of accurate traffic splitting, and best practices for reliable results.