top of page
Image by Glenn Carstens-Peters

Álvaro Martínez Mateu

This is my professional blog, where I share my knowledge about Paid Media and Digital Marketing, along with the trends that shape this field.  I hope you find what I have written useful.




When creating budgets for major clients with significant investments, the approach must be meticulous, strategic, and aligned with the client's objectives. This process is not just an administrative task; it lays the foundation for building a solid professional relationship and establishing clear expectations.


The first step is to identify the Paid Media channels to be used. Each channel has unique characteristics and plays a distinct role within an integrated strategy. For instance, Google Ads may be ideal for capturing existing demand, while Meta Ads might work better for demand generation and audience building. This initial analysis not only defines the scope of the budget but also demonstrates a deep understanding of the tools available.


Calculating the budget is more than just crunching numbers. It requires basing decisions on historical data, industry benchmarks, and clear objectives. A significant investment demands well-founded justifications, including return expectations and risk analysis. For example, if the client plans to spend over €100,000 per month, a detailed breakdown of costs by channel and campaign type, along with an optimization plan, is essential.


Defining the overall strategy is a crucial aspect. This step involves structuring a clear approach that the client can understand and visualize. High-investment clients seek transparency and clarity, so it is vital to show how each component of the budget contributes to the campaign's success. This could include the distribution between upper and lower funnel activities and the expected frequency of creative updates.


The campaign structure should be detailed yet flexible, including the investment allocated to each channel and the selected ad formats. Additionally, it is important to explain concepts that the client may not be familiar with, such as the importance of the first 3 seconds of a video or how lookalike audiences work.


Another critical element for large budgets is calculating the time required for management. Managing high-investment projects demands more constant oversight, so including estimated hours and the need for additional team members, such as designers, reflects professionalism. If the budget’s scale requires it, having a second manager dedicated to the project ensures that all aspects are monitored appropriately.


Finally, everything must be presented in a high-quality document. This document serves as a reference and enhances the perception of professionalism. Presenting the budget in a clear, organized, and visually appealing format makes a significant difference in conveying confidence.


Creating budgets for large clients is an exercise in strategy, communication, and foresight. It is an opportunity to establish the groundwork for successful projects and long-lasting relationships.




Each test in paid media turns uncertainty into learning: what to test, how to do it, and why the right budget and time make all the difference. Every part of a campaign can drive success, but it can also become a drain on time and resources if the approach isn’t right. So, what elements should you test, and how can you structure an effective routine for doing so?


The first step is understanding which elements have the greatest impact on results. Generally, the order of priorities should be: offer/value proposition, creative, headlines, targeting, format, primary text, call-to-action, and description. This isn’t just theory; it’s supported by performance data. For example, the offer is the backbone of any ad—without a clear and compelling value proposition for the user, no other element can compensate for it.


An effective routine for your testing strategies should include:


  1. Define the key element to test: Instead of trying to assess everything at once, focus on a single element. For instance, does the headline effectively communicate the value of the offer?

  2. Set clear hypotheses: Define what you aim to achieve with the change and how you will measure success (CTR, CPA, ROAS, etc.).

  3. Design controlled variations: Create versions that differ only in the element being tested. This ensures results aren’t diluted by other factors.

  4. Allocate an appropriate budget: This is where many uncertainties arise. Tests with very low budgets and/or short timelines tend to produce inconclusive data, mainly due to randomness. Without significant evidence, any decision based on such data will be built on shaky ground.


The issue with low budgets or short timelines is that they undermine the confidence that data can provide. Randomness, as mentioned, can lead you to incorrect conclusions, such as pausing an ad that could have performed better with more budget, time, or optimisation, or believing a winning variation is effective when, in reality, its better performance may have been random. A minimum timeframe of 7 to 14 days is recommended, depending on the volume of data you can gather, which will primarily depend on the budget and time dedicated to the test.


When this methodology is applied consistently, the benefits become much clearer. Optimisation is about building a system of continuous improvement. Ultimately, the real impact of paid media lies in discovering scalable and replicable patterns.


For those seeking sustainable results, the key is making the right changes supported by robust data. Next time you plan a test, ask yourself if the conditions are right for obtaining actionable insights. If they aren’t, it may be better to adjust the variables or postpone the test until they are. What do you think? What has been your biggest challenge when testing elements in paid media?




Spending on paid media can determine the success or failure of your digital marketing strategies. Deciding how much to invest isn’t about picking a random number but rather balancing your goals and having a clear understanding of Cost Per Action (CPA) and Customer Lifetime Value (CLTV). A well-structured approach will allow you to establish a sustainable foundation for growth.


The starting point is to define what you want to achieve. Your goals will dictate how much you need to invest. For instance, a startup aiming for rapid growth might afford a higher initial spend, whereas an established business will prioritise sustained profitability.


CPA is a key metric. Spending between 5 and 15 times your CPA is common practice, although certain scenarios may justify deviations. For example, in the luxury market, where customers have a very high CLTV, it may be acceptable to invest 20 to 25 times the initial CPA to acquire exclusive customers. In contrast, a startup in a testing phase might limit spending below the common range to collect data without straining cash flow. A business with a high CLTV can justify greater spending as the long-term return outweighs the cost. Conversely, for an e-commerce business with tight margins, exceeding this proportion could jeopardise viability.


Highly competitive markets also require greater investment. For example, sectors like enterprise SaaS might justify spending up to 100 times the CPA if client relationships are long-lasting, CLTV is substantial, and the target CPA is relatively low. However, these cases are the exception rather than the rule.


Your business stage is another important consideration. New companies in growth markets might spend 10 to 20 times their CPA to establish themselves in the industry. This is justifiable because they often need to build brand recognition, gather initial data, and create a customer base from scratch, which requires greater upfront risk. In contrast, businesses in mature markets tend to maintain more moderate and targeted spending.


Budget allocation is equally crucial. Not all platforms offer the same ROI, and your strategy must be adjusted based on historical results. For instance, a business consistently seeing strong performance on Google Ads might allocate 60% of its budget there while exploring platforms like Meta Ads with the remaining 40%.


Finally, continuous testing is essential. An initial budget should be designed to collect sufficient data. As you gather insights on what works best for your audience, you can redirect resources to the most effective tactics and channels.


Once your campaign is running, increasing the budget will force the system to explore new audiences, which can destabilise the initial learning phase of your campaigns. This happens because the algorithm must test segments that may not be as effective as the original ones, leading to fluctuations in conversion rates and CPA while the campaign identifies new high-potential audiences.


This adjustment period may result in temporarily inconsistent performance as you expand into audiences with lower purchase intent. To avoid a significant negative impact on performance, gradually increasing the budget—ideally no more than 20% at a time—allows the system to adapt without resetting the learning phase. Accounts with larger budgets tend to manage this risk better, as campaigns have a greater capacity to run rapid tests and validate new channels with more flexibility.


Investing in paid media is about balancing investment and return with a strategic, data-driven approach. Prioritise analysing metrics such as CPA and CLTV, adjust according to your business stage, and never underestimate the importance of constant testing and learning.

bottom of page