Increase your ROI with A/B Testing on Social Media Ads

As a small business owner, you know the importance of marketing, especially when it comes to social media. But how do you know if your social media ads are working as well as they should? A/B testing! Keep reading and I’ll walk you through how A/B testing works, why it’s so effective, and how you can use it to make your social media ads more impactful.

What is A/B Testing?

A/B testing, also called split testing, is essentially an experiment. You create two different versions of an ad: version A and version B, and show them to your audience at the same time. The key is to change only one variable at a time, this could be the image, the headline, the copy, or even the call-to-action. The goal of this experiment is to compare the performance of the two versions of the ad and see which variation gives the best results. Here’s why A/B testing is so important, with the minimum effort you’ll be able to avoid the guesswork of your social media marketing. Rather than just assuming you know what your audience likes, A/B testing gives you real data to back up your decisions.

Why A/B Testing Matters for Small Businesses

You may be wondering, “Is A/B testing really necessary for a small business like mine?” The answer is definitely yes. As a small business owner, your marketing budget is probably tight, so every dollar counts and the last thing you want is to waste money on ads that aren’t working. A/B testing helps you optimise your spending, ensuring that your ad budget goes toward the ads that perform the best.

Let’s say you’re running an ad to promote a special offer for your products. Without testing, you might create a single ad and hope for the best. But what if there’s another version of that ad, maybe with a different image or a better CTA, that could bring in twice as many customers for the same cost? You’d never know unless you test! By using A/B testing, you get to see exactly what works and what doesn’t. Over time, these insights will allow you to build smarter, more effective campaigns and make better use of your budget.

How A/B Testing Works

Let’s break down how A/B testing works in a simple step-by-step guide, this way you’ll have a clear understanding of each one of them.

1. Set a Clear Goal

Before you even begin creating your ads, it’s important to define what you’re trying to achieve. What does success look like for this campaign? Are you trying to increase website traffic, boost conversions, lower your cost-per-click, or perhaps grow your email list? For example, if you’re launching a new product, your goal might be to generate more purchases directly from your ad. On the other hand, if you’re promoting a special offer, your goal could be to drive people to your website to claim the deal. Having a specific goal in mind will not only keep you focused but will also help you measure which version of your ad is more effective.

2. Choose One Variable to Test

One of the biggest mistakes in A/B testing is changing too many things at once. If you change the image, the headline, and the CTA all at the same time, how will you know which one of them made the difference? To keep things simple, focus on testing one variable at a time. Maybe you want to see if a more colourful image attracts more clicks, or if changing the CTA button increases conversions. Whatever it is, keep all other elements of the ad the same so you can accurately measure the impact of that one change.

3. Run Both Ads Simultaneously

Once you’ve created two versions of your ad it’s time to launch them. Remember to make sure both ads are running at the same time, and that they’re being shown to a similar audience. This ensures a fair comparison and eliminates factors like time of day or week affecting the results. For example, if you test Ad A on a Monday and Ad B on a Friday, you might get different results simply because people behave differently on different days. Launching the ads simultaneously levels the playing field and will give you clear results.

4. Monitor Performance Metrics

Now that your ads are live, it’s time to track their performance. Depending on your goal, you’ll want to focus on different metrics. Some key ones to keep an eye on include click-through rate (CTR), so how many people clicked on your ad after seeing it? Conversion rate, so how many people completed the desired action? Or the Cost per Click (CPC) or Cost per Acquisition (CPA) to quantify how much are you paying for each click or to acquire a new customer or lead. If you want to learn more about these metrics and understand how they work, head over to our blog and keep reading.

➡️ If you’re running ads on platforms like Facebook or Instagram, you can take advantage of the built-in analytics tools to make this step much easier.

5. Analyse the Results

For this step, we will have to wait until you’ve collected enough data, this might take a few days or weeks, depending on how much traffic your ads are getting. Then it’s time to analyse the results. Let’s say version A had a CTR of 2% and a CPA of 10€, while version B had a CTR of 3% and a CPA of 7€, then in this case, Ad B is the clear winner, delivering better results at a lower cost. Thanks to these results, you can now give more budget to Ad B and even create additional tests to see if further optimisations can be done.

6. Scale and Repeat

After identifying the winning ad, you can invest more in that version. But remember, A/B testing isn’t a one-and-done process, as your audience’s preferences change or as new creative ideas come to mind, keep testing. For example, after finding that Ad B performed better with a particular headline, you might test different images or even experiment with targeting new audience segments. Each test brings new insights, helping you fine-tune your strategy.

How A/B Testing Helps Small Businesses Boost Conversions

Now that you know what it is and how exactly it works, let’s fully understand how it can help your small business. Imagine a small bakery that wants to promote a limited-time offer on custom cakes for birthdays and special occasions. They decided to run a social media ad campaign and create two variations, one with a colourful image of a cake with the headline, “Celebrate in Style! Order Your Custom Cake Today” and the other with a simpler image of the bakery with the headline, “Get 10% Off Your First Custom Cake, Limited Time Only!”

Both ads target the same audience and have the same budget, but after a week of testing, the bakery noticed that while Ad A attracted more clicks, Ad B led to more conversions, so actual cake orders, because even though the image was less eye-catching, the 10% discount in the headline was more persuasive in driving purchases. With this information in hand, the bakery decides to focus its budget on Ad B, continuing to optimise it with further tests.

Start your A/B Testing with us!

A/B testing may sound technical, but it’s really just about making informed decisions, instead of relying on guesswork. Whether you’re promoting a new product, running a seasonal sale, or just trying to grow your brand, A/B testing helps you optimise your ad campaigns to get better results.  So, next time you’re creating social media ads, remember to test, analyse, and refine. 

Get a social media and ads report — we’ll analyse your performance and help you improve your results!

A/B Testing on Social Media Ads to Increase ROI FAQs

Do I need a big budget to start A/B testing on social media ads?

Not at all! You don’t need a large budget to start testing. Even with a small budget, A/B testing can help you improve your ad performance, the key is to focus on small, meaningful tests and gradually scale your efforts as you learn what works best.

How long should I run my A/B tests?

It depends on how much traffic your ads are getting. Ideally, you should run a test long enough to gather significant data, usually, that can take a few days to a week. The important thing is to let the test run until you’ve gathered enough results to make a clear decision. You want to avoid making changes too early before you have a true winner.

How do I know which version of my ad is the winner?

It’s simple: look at the numbers! The winning ad will be the one that meets your goal, whether that’s more clicks, more conversions, or lower costs. For example, if Ad A has a higher click-through rate but Ad B brings in more sales, Ad B is likely your winner, especially if your goal is increasing conversions.

Can I run multiple A/B tests at the same time?

Yes, but it’s important to avoid testing too many things at once. Running multiple tests is fine as long as each test focuses on just one variable (like testing the headline in one test and the image in another). If you try to change too many elements at the same time, it becomes harder to figure out what’s really making the difference.

How will A/B testing improve my ROI on social media ads?

A/B testing helps you find out what works, so which ad brings in more clicks, conversions, or sales at the lowest cost. Over time, you’ll spend less money on ads that don’t work and more on ads that do, increasing your overall ROI. It’s about making sure every dollar you spend is working for your business.