A/B Testing for Informed Optimisation

A/B testing is a tool available on Amazon Seller and Vendor that allows you to compare two versions of content against one another to see which performs better. A randomly selected group of users is shown one version of content (Version A), while another randomly selected group is shown the other version of content (Version B). The behaviour and engagement of both groups are then compared to see which version performed better.

A/B testing helps you understand how to better optimise your listings to improve user experience and in-turn encourage conversion. Such tests can help increase sales by up to 25% (Amazon, 2023).

A/B testing is highly customisable, which means you can test a wide range of variables and elements to determine what works best for your specific audience and product. You can currently test the title, bullet points, description, main image and A+ Content.

Here are a few benefits from conducting A/B testing on your content:

  • Better customer insights - A/B testing can provide businesses with valuable insights into their customers’ behaviour and preferences. By analysing the data gathered from A/B tests, you can gain a deeper understanding of your target audience and use that knowledge to create more effective content and marketing campaigns. Consequently, this can help improve return on investment (ROI) by identifying the most effective ways to spend your marketing budget. It’s easier to determine which design, messaging, or layout drives the most conversions.

  • Data-driven decision making - A/B testing provides objective data on how users interact with your content, which can inform your decision making and help you optimise your content for better results.

  • Competitive advantage - By constantly testing and refining your content, you can continuously improve your performance and stay ahead of the competition.

  • Increased Customer Engagement - By testing different designs or content variations, you can identify what resonates with your customers and tailor their shopping experience to meet their preferences. This can result in increased engagement and customer loyalty.

  • Reduced Risk - By testing changes on a small subset of customers before implementing them at large, this can help reduce the risk of negative impacts from potential loss of customer satisfaction and revenue.

While A/B testing offers great potential advantages, there are a few things to be aware of. Firstly, A/B testing can provide insight into which content variations perform better, but it may not always provide insights into why a particular variation performed better. This can make it difficult to understand the underlying reasons for the performance differences.

Another potential limitation is the so-called “sampling bias,” which means that the test results may not be representative of the entire user population. For instance, if the A/B test is conducted on a small sample size or limited to a specific demographic, the results may not accurately reflect the behaviour or preferences of the wider customer base.

Lastly, A/B testing only measures the impact of a few specific content variations and may not capture the full complexity of user behaviour or preferences. Customers may interact with the content in ways that the A/B test did not anticipate, such as by searching for a product in a different way, or by having different levels of familiarity with the brand or the product. These factors can make it difficult to generalise the A/B test results to the broader population.

Tambo’s Top Tips:

  1. Run tests for sufficient time to ensure that you have collected enough data to make an informed decision. This will help you avoid making decisions based on incomplete or insufficient data. We suggest a minimum of 6 weeks.

  2. Test small changes one at a time to understand their individual impact on the customer experience. This will help you avoid making large, sweeping changes that may negatively impact the customer experience.

  3. Certain products or content may perform differently depending on the time of year, holidays, or other seasonal factors. It’s important to take these factors into account when conducting A/B tests to avoid drawing inaccurate conclusions.

  4. Implement changes gradually. If you make several changes at once and notice an increase in conversion rate, it may be difficult to determine which change was responsible for the increase. Conversely, if you notice a decrease in conversion rate, it may be difficult to determine which change caused the decrease. By implementing changes gradually, you can isolate the impact of each change and ensure that any negative impact is minimised.


Overall, A/B testing on Amazon is a versatile and effective method of testing content that can help you optimise your listings, drive sales, and improve the customer experience. Approach A/B testing with caution and follow our top tips for the best outcome.


If you have any other questions or want to find out more on how best to optimise your content on Amazon, please get in touch.

Beth Fisher, Senior Content Exec

AB Testing Content Tambo Blog