How Can A/B Testing Improve Your SEM Landing Pages for Both Mobile and Desktop?

How Can A/B Testing Improve Your SEM Landing Pages for Both Mobile and Desktop?

In the dynamic landscape of digital marketing, Search Engine Marketing (SEM) plays a pivotal role in driving targeted traffic to your website. However, the journey doesn't end with securing a prime spot on search engine results; the effectiveness of your SEM campaign largely depends on the quality of your landing pages.

Enter A/B testing–a powerful technique that allows marketers to refine and optimize their landing pages for both mobile and desktop users. 

In this blog post, we'll explore the intricacies of A/B testing and how it can significantly enhance the performance of your SEM landing pages.


Understanding A/B Testing

A/B testing, also known as split testing, involves comparing two versions of a webpage to determine which one performs better. By creating two variations (A and B) and exposing them to different segments of your audience, you can measure and analyze user behaviour to identify which version yields better results. 

The insights gained from A/B testing can be invaluable in refining elements such as headlines, call-to-action buttons, images, and overall design to enhance user engagement and conversion rates.

Source: Shutterstock


Why A/B Testing Matters for SEM Landing Pages

There are many reasons why A/B testing on landing pages is very important to the performance of a paid media campaign. 

Optimize Towards User Experiences & Device-Specific Platforms

A seamless and user-friendly experience is extremely important when it comes to the success of your SEM campaign. A/B testing allows you to experiment with different layouts, fonts, and navigation structures to identify what resonates best with your audience. 

Be sure to optimize towards mobile users, as they are the most used device and where screen real estate is limited. Optimizing the user experience is crucial to preventing bounce rates and encouraging conversions.

Maximize Your Conversion Rates

The ultimate goal of any SEM campaign is to convert visitors into customers. 

A/B testing empowers marketers to identify the elements contributing most to conversion rates. By tweaking the layout, copy, or visuals, you can create landing pages that resonate better with your audience and drive higher conversion rates on both mobile and desktop devices.

Data-Driven Decision-Making:

A/B testing provides tangible, data-driven insights into user behaviour. Rather than relying on assumptions or guesswork, A/B testing allows us to make informed decisions based on real user interactions. 

This iterative process of testing and refining ensures that changes are grounded in measurable improvements, leading to more effective landing pages.

Steps to Implement A/B Testing for SEM Landing Pages


Determine Your Hypothesis

Before diving into A/B testing, it's crucial to define clear hypotheses and objectives for your SEM landing pages. Whether it's increasing sign-ups, boosting sales, or improving engagement, having a well-defined goal will guide your testing strategy.

Define What You Want to Change on the Page to Test

Not all elements on a landing page contribute equally to its success. Typical areas to test include headlines, images, call-to-action buttons, forms, and overall layout. Prioritize testing based on the elements that are most likely to impact your defined objectives.

Don’t Just Stick With One Variation

Develop two or more variations of your landing page with distinct elements you want to test. Ensure that changes are significant enough to yield meaningful insights. For example, testing two entirely different headlines will provide more valuable data than testing variations of the same headline. 

You are already running the test, so get all the understanding you can out of your audience.

Be Sure to Randomize and Split Traffic

To ensure unbiased results, use A/B testing tools to randomize and split your website traffic between the different variations. This randomization helps control external factors and ensures that the results accurately reflect user preferences rather than other variables.

Don’t Be Afraid to Implement Changes

If you have been running the test and notice there is one particular item that has led to an improved performance, be sure to implement the update. This might involve tweaking specific elements, revising copy, or adjusting the overall design of the landing page. Ensure that changes are consistent with the preferences of both mobile and desktop users.

Iterate and Repeat

A/B testing is an iterative process. Once changes are implemented, continue monitoring performance and gather additional data. Use this ongoing feedback loop to refine your landing pages further. Continuous testing and optimization are key to staying ahead of evolving user preferences and market trends.

Source: Shutterstock


Best Practices for A/B Testing on Mobile and Desktop


Responsive Designs Are Key

Ensure that your landing pages are designed responsively to adapt seamlessly to various screen sizes. A/B testing should consider the unique challenges and opportunities presented by mobile and desktop platforms.

Pay Attention to Load Speed—No One's Waiting for a Page to Load

Mobile users, in particular, are sensitive to page loading times. A/B test different strategies to improve loading speed, such as optimizing images, leveraging browser caching, and minimizing unnecessary elements.

Keep Forms Simple, Yet Detailed

Forms should be no longer than 3–4 custom questions outside of the basic fields (e.g. name, phone number, email). You want to get the top-level details you would typically ask in a qualifying call without overwhelming the user.

Device-Specific Content

Recognize the differences in user behaviour on mobile and desktop. Tailor your content to suit the preferences of each audience, ensuring a cohesive yet customized experience across devices.


In the ever-evolving landscape of digital marketing, the success of your SEM campaign hinges on the effectiveness of your landing pages. A/B testing emerges as a powerful tool to refine and optimize these crucial touchpoints for both mobile and desktop users. 

By systematically testing and iterating based on real user data, marketers can create landing pages that not only capture attention but also convert visitors into customers. 

Embracing A/B testing as a continuous process allows you to stay ahead of the curve, adapting to shifting user preferences and ensuring the sustained success of your SEM efforts. 

So, get prepared, start testing, and unlock the true potential of your SEM landing pages.

Do you need a hand with enhancing your Paid Media strategy? At TechWyse Internet Marketing, we specialize in Paid Media, along with a long line of other digital marketing services. From SEO and Web Design to Content Marketing and Social Media Management. Reach out to one of our experts and we will help you watch your business climb to the top. To get started, call (416)-410-7090 or contact us here.

It's a competitive market. Contact us to learn how you can stand out from the crowd.

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