A/B testing is essential for small businesses because it provides valuable and useful information and insights on the performance and the results of their website, mobile app, or product. A/B testing enables small businesses to identify and to evaluate the strengths and the weaknesses of their website, mobile app, or product, and to make informed and strategic decisions on how to improve and to optimize them. A/B testing also supports and enables small businesses to enhance and to maximize the effectiveness and the efficiency of their online marketing and advertising efforts, and to increase the return on investment (ROI) of their online marketing and advertising spend.