Web Form Design: Best Practices Guide to Convert Leads into Customers
Forms are often the forgotten element. They are seen as a simple technical formality, when in reality they are the main bottleneck of your business. If...

In today's digital landscape, conversion optimisation is an essential component for the success of any company or online business. At Boost, a consultancy specialising in digital analytics and conversion, we consider A/B testing a fundamental tool for improving the effectiveness of marketing and conversion strategies. In this article, we are going to look at what A/B testing is, its benefits, when it can be applied, and how we carry out these tests to boost our clients' results.
A/B testing, also known as split testing, is a methodology that allows you to compare two versions (A and B) of an element in a digital strategy to determine which performs better.
This is achieved by showing both variants to random segments of the audience and analysing specific metrics, such as conversion rates, clicks or revenue.
A/B testing offers various advantages, and the most notable are:
Informed decision-making: By analysing concrete data, decisions are based on evidence rather than assumptions.
Continuous optimisation: It allows strategies to be adjusted continuously, adapting to changes in user behaviour.
Performance improvement: It identifies elements that positively impact conversion, increasing the effectiveness of campaigns and web pages.
Risk reduction: By testing changes on small portions, the risk of implementing modifications that could have a negative impact is minimised.
Copy:
Titles and subtitles: Experiment with different approaches to capture the user's attention from the very first instant.
Body text: Vary the wording, tone and length of content to determine which style resonates best with the audience.
Email subject lines: Optimise open rate by testing different subjects.
Content depth: Vary the depth and structure of content to assess its impact on user retention and engagement.
Design and layout:
Navigation: Assess the effectiveness of different navigation structures to improve the user experience.
Forms: Experiment with the length, required fields and design of forms to maximise conversions.
CTA (Call to Action): Modify colours, text and placement of call-to-action buttons to increase interaction.
Social Proof: Test different types of social proof to strengthen user trust (reviews, ratings, testimonials...).
A/B testing is carried out in many situations to optimise and improve the effectiveness of specific elements in digital strategies.
Knowing the ecommerce trends leading the market, here are some common scenarios where it is advisable to run A/B testing:
Launch of new websites or landing pages:
Email marketing campaigns:
Changes to a website's design or structure:
Optimisation of website elements:
Content tests:
Changes to online advertising strategies:
Optimisation of purchase processes:
Mobile app updates:
Carry out a comprehensive analysis of existing data, identifying areas of opportunity and possible improvements.
Observe current behaviour and formulate clear hypotheses about how conversions could be improved.
Develop the variants (A and B) based on the hypotheses formulated.
Implement the variants in a controlled environment and record relevant data.
Evaluate the results, determine the winning variant and apply the necessary changes to the strategy.
At Boost, we consider A/B testing a key tool for continuous improvement. By applying this strategy systematically, our clients experience an increase in conversions and an improvement in user experience. Adaptability and responsiveness to data are the keys to standing out in today's highly competitive digital landscape, and A/B testing is the tool that drives us towards those goals.
Would you like to improve your conversion strategy? Not sure whether to invest in a specialist conversion consultancy? Write to us with no commitment to see how we can help.
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