A/B Testing
A/B Testing
Does button A or button B sell more? Let your customers decide.
No more subjective arguments about which version works best. We put hypotheses to the test in the real world: two versions, the same visitors, and the data decides. We only make permanent what proves it sells more, with statistical significance, not with hunches.
Some of our clients
The boss’s opinion doesn’t sell: the data does
Every change to your website is a hypothesis. Instead of arguing in a meeting about which one is better, we put it to the test with real users. A/B testing turns opinions into evidence-based decisions, and evidence into more sales.
Why do so many brands trust our agency?
Talking to other agencies? Oh… we’re sorry.
3 real reasons why we’re different from the rest.
How can we help you?Always one step ahead
1. We set the trend and innovate
We do not do the same old marketing. We are pioneers at optimizing on platforms others do not even know are possible: we get ChatGPT to recommend our clients’ websites, we work SEO on YouTube and we automate processes with n8n that save thousands of hours a year.
We live marketing… and we teach it
2. References in Marketing, AI and UX
We do not just apply what we know: we teach it, prove it and share it. We are educators with over 500,000 followers, Pedro and Oscar teach at universities such as UPC, EAE Business School and UPV, and we run our own academy with 2,000+ members.
Partners of the leading software
3. We work with the most TOP brands
We are official partners of the most recognized software in the industry, such as TikTok, Elementor, Semrush and Raiola Networks. That means priority access, direct support and certified best practices: faster implementations, stronger integrations and more reliable results.
Case studies
The success case is our goal
Case study
SEO, SEM, UX, CRO
Zona F
Leading driving school in Barcelona and Hospitalet, with over 30 years training drivers for every license —from car to truck— and integrating technology into teaching.
View full caseWhat we achieved:
Conversion increase +30%
Conversion rate3.2% → 4.9%
What we achieved:
Revenue +31% the first year
Case study
SEO, Paid Media, International
Huiike
Paddle surf and water sports brand. We scaled their revenue and opened up new international markets by combining SEO, paid media, and a solid brand strategy.
View full caseWhat we achieved:
Market expansion +4 países
What we achieved:
Stock sold out in season
Client reviews
What our clients say
I reached out to Pedro and his team at Palo Seco 3 years ago to help me with the web positioning of my architecture firm. What I liked most was how transparent they were with us from the start, sharing all their processes and making hard-to-grasp topics easy to understand. Highly recommended.
Javier Ruyra VilluendasCEO of CeditechIf you want a team that does SEO not just to grow traffic, but to make a real impact on your business, the Palo Seco team is exactly what you’re looking for! On top of that, their training sessions are top-notch for anyone just getting started in digital marketing.
Borja Prieto BustamanteHead of Marketing at FactorialOscar from PALO SECO developed the Tok&Go branding for us with excellent results. Thanks to him we have a clear brand that conveys our values. Likewise, the working methodology for building the website made the whole process simple and the result outstanding.
Javier Garcia SotoCEO of Tok&GoPedro SEO and his team have done a great job on the different projects I’ve worked on with them, always delivering quality and meeting the project deadlines.
Jonathan SeoaneCo-founder of WeFoxThey helped me understand that the online channel matters. I trusted them and, thanks to their commitment, I’ve been able to adapt to the new changes and grow my client base.
Jordi RebullFounder of VeneersPedro is a great professional; he knows the world of SEO and manages to make even the most complex terms easy to understand for people who, like me, are complete beginners in the field.
Marco CreativoFounder of Marco CreativoEnd of the arguments
Stop debating and start measuring.
The market answers better than any meeting.
Design and copy decisions are usually settled by hierarchy or by whoever speaks loudest. It’s the worst way to decide something that affects your sales.
A/B testing puts the decision where it belongs: in the hands of your real users, who vote with their clicks and their purchases.
Statistical rigor
A winner is only a winner if the data confirms it.
Without statistical significance, there’s no conclusion.
The most common mistake in testing is concluding too soon and mistaking chance for a real improvement. That leads to implementing changes that don’t work.
We work with statistical rigor: we wait for enough data before declaring a winner, so every decision is solid.
Compounding improvement
Every test won builds on the last.
Continuous experimentation compounds results.
An isolated A/B test improves one point; a continuous testing program transforms your conversion rate over time, improvement on improvement.
On top of that, every experiment (win or lose) teaches you something about your customers that you can apply across your whole business.
Benefits of A/B testing
Three reasons why testing always beats guessing.
- 01
Risk-free decisions
Before rolling out a change to your whole website, you validate it with part of the traffic. You only implement it if it proves it sells more. Zero blind bets.
- 02
Improvements that add up
Every test won raises your conversion permanently. Continuous experimentation compounds results month after month with no recurring cost.
- 03
You get to know your customer
Every test, win or lose, reveals something about how your customer decides. That learning is gold for your product and your messaging.
Arguing about which version sells more?
Stop guessing. We design the A/B test that settles it with real data from your users.
Start testing
No fluff, no strings
Tried it before and it didn’t work? This is how we work.
- 01
We work with measurable goals (KPIs).
We do not hide behind 50-page reports full of vanity metrics. We set real indicators from day one: more sales, more bookings and more qualified leads. If it does not impact your bottom line, it is not real marketing.
- 02
Continuous contact: we are here for whatever you need.
Forget endless support tickets or talking to a sales rep who has no idea what happens on your site. You get fluid, constant communication with the specialists who execute your strategy, working as an extension of your own team.
- 03
No lock-in: no fine print.
We do not believe in fine print or holding clients hostage with 12-month contracts. Our best guarantee is work done well. If you stay with us, it is because you see your business grow month after month. Total freedom, absolute transparency.
FAQ
Have a question about A/B testing?
We’re here to answer them. And if any remain, let’s talk.
Talk to an expertWhat exactly is an A/B test?
It’s an experiment where we show two versions of an element (a page, a headline, a button, a form) to equivalent groups of users at the same time, and measure which one converts better. Version A is usually the current one and B your improvement hypothesis. By splitting the traffic and comparing results with statistical rigor, we know for certain which one sells more before rolling it out to everyone.
How much traffic do I need to run an A/B test?
Enough to reach statistical significance in a reasonable time: the more traffic and conversions, the sooner you reach a reliable conclusion. With low traffic, tests take longer and it’s better to focus on high-impact changes or other CRO techniques (heuristics, friction improvements). We assess your volume and tell you honestly what kind of experimentation makes sense in your case.
How long does an A/B test last?
As long as it takes to get reliable data, normally between 2 and 6 weeks depending on your traffic and conversion rate. A very common mistake is stopping the test as soon as one version “is winning”: that mistakes chance for a real improvement. We wait for statistical significance before declaring a winner, even if it takes a little more patience.
What happens if my new version loses?
That’s a win too: you’ve avoided implementing a change that would have reduced your sales, and on top of that you’ve learned something about your customer. In CRO there are no “failed” tests, there are tests that provide information. Every result, whether the variant wins or loses, feeds the next hypothesis and improves your understanding of the user.
What can be tested with an A/B test?
Practically any element that influences the user’s decision: headlines, copy, buttons and their calls to action, images, the structure of a page, the number of checkout steps, form fields or even the offer and the price. The key is to isolate one variable per test to know for certain what produces the difference. We prioritize what to test based on the traffic each element receives and the impact it can have on your sales.
How much does it cost to set up an A/B testing program?
It depends on whether you want a one-off test on a specific element or a continuous experimentation program with several tests a month. We define it based on your traffic and goals, and give you a fixed quote before we start. Be clear on this: a well-run test prevents you from rolling out a change that would reduce sales across your whole website, so more than an expense it’s insurance on every decision that affects your conversion.
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