What is a media mix?

The media mix has become an essential strategic lever for brands looking to improve performance and resilience. Behind this term lies much more than just a collection of channels : it is a response to the limitations of dominant platforms, ad fatigue, and declining conversion rates.

🔎 In this article, we explain what the media mix is, why it is essential today, and most importantly, how to turn it into an asset for your campaigns in 2025.

Media mix: why does it matter?

If your campaigns are running out of steam, it’s not (just) your fault

Advertising spend on social media keeps rising (+24% between 2023 and 2024). These platforms, which are omnipresent in our digital lives, have successfully won over the majority of advertisers.

But for several months now, the signals have been deteriorating:

👉 Rising acquisition costs,

👉 Falling conversion rates,

👉 Growing ad fatigue among audiences.

75% of marketers are seeing a significant drop in social media ad performance, according to a Taboola & Qualtrics study.

The reason? A concerning reliance on Big Tech?

For years, Big Tech has dominated the global advertising landscape. This is clearly reflected in advertisers' media choices.

- In 2024, 75% of advertising spend in France went to just 8 players: the extended GMA (Google/YouTube, Meta, Amazon, TikTok, LinkedIn, Snap, X, Pinterest) — according to the 33rd e-pub Observatory (February 2025).
- The share of European players fell to 21% of the market, a slight decline compared to previous years.

The result: brands are concentrating their budgets in familiar… yet risky environments.

An over-reliance leaves them vulnerable to algorithm changes, shifts in advertising policies, or geopolitical contexts.

Trump is, in fact, close to several leaders of these companies, notably Mark Zuckerberg. With Meta, he seems aligned with a more conservative vision, illustrated by the end of fact-checking earlier this year – a major turning point for brands that rely on the platform.

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What is media mix?

The media mix is not just about adding channels.

It is a strategy built around the complementarity of levers (paid, owned, earned, online and offline) to maximize reach, recall, and efficiency.

By modeling their investments, brands often discover that an underutilized channel can generate a strong ROI, provided it is well orchestrated.

> 🔍 Marketing Mix Modeling (MMM) makes it possible to analyze the real contribution of each channel to overall performance.
This model—even more relevant today thanks to AI—provides a clearer perspective for methodically reallocating budgets.

By diversifying their channels and narratives, advertisers:

- minimize the risks associated with over-reliance on a single ecosystem,
- regain their media sovereignty,
- and restore the performance of their campaigns, sometimes at an equivalent cost.

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🛠️ How to (re)build a high-performing media mix?

Now that you understand the media mix and its current importance, you may be wondering what actions to take. Here are a few levers you can use:

🎬 Storytelling for your campaigns

A good media mix doesn't broadcast a single message everywhere: it tells a coherent story, adapted to formats, intentions, and touchpoints.

👉 Think about the user journey before buying media.

🛰️ Move beyond the Big Tech giants

Don't bet everything on dominant platforms. Explore alternative ad networks, contextual programmatic, and local media tailored to your niche. This diversification — for greater proximity and often higher efficiency — is at the heart of an intelligent media mix.

🧲 Focus on attention marketing

We no longer buy clicks; we seek to capture attention. This requires engaging formats, useful storytelling, and activations that are less noisy but more relevant.

We explained how to do this in our article on attention marketing 👈.

🛰️ Mixing online & offline

A high-performing media mix also leverages physical channels : DOOH, events, radio, press…

Reaching your target audience in varied contexts boosts brand recall… and conversion.

🔍 Strengthening your owned media with SEO and focusing on GEO

SEO remains fundamental, but Generative Engine Optimization (GEO) is becoming essential for appearing in conversational engines like ChatGPT. We detailed this in our GEO vs SEO article. An approach to integrate into any media mix strategy looking toward the future.

⚗️ Test, model, adjust

No more autopilot. We we test, we measure, we adjust continuously.

Thanks to marketing mix modeling, powered by AI, we identify what truly creates value — and we manage budgets with precision.

What works today may not work tomorrow: it is better to anticipate change than to be caught off guard by it.

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✅ Final thoughts

In a landscape of declining social platform performance and heavy reliance on US tech giants, building a media mix strategy is no longer optional: it is a prerequisite for long-term success.

By intelligently diversifying their channels, brands regain control, minimize risk, and improve the overall performance of their campaigns.

A solid media mix not only helps to capture attention more effectively, but also strengthens your long-term presence, both online and offline.

> At Klox, we help brands build a custom media mix, driven by data, continuously optimized, and designed to meet the challenges of today… and, more importantly, tomorrow.
> 🎯 Looking to regain control over your media performance? Start by rethinking your media mix.