Digital Audio Advertising: Spotify & DAX Explained

Digital audio advertising is audio ads delivered through streaming music platforms like Spotify, through the Digital Audio Exchange (DAX), and through smart speakers and connected devices. Unlike traditional radio, digital audio ads are served to individual listeners based on data such as age, location, interests, and listening behaviour, so the right message reaches the right person rather than everyone at once.

If that sounds like radio with a digital layer on top, that is a fair starting point, but the differences matter. Below we explain how it works, what it costs, and where it fits, written from the perspective of an independent agency that plans across the whole market rather than selling any single platform.

How does digital audio advertising work?

Digital audio advertising works by inserting your audio ad into the stream between songs, podcast episodes, or radio content on digital platforms. When a listener is streaming, the platform serves your ad based on the data it holds about them, so two people listening to the same playlist can hear different ads suited to each of them.

The ads are usually 15 or 30 seconds, often paired with a clickable companion banner shown on screen during playback. Most digital audio ad formats are unskippable and report completion rates typically above 90%, which means your message is generally heard in full rather than skipped or scrolled past. This is one of the format’s advantages over skippable video or scrollable display.

A few of the main routes:

Spotify reaches listeners on its ad-supported free tier with audio ads, video, and display formats, and offers targeting by age, gender, location, playlist or genre, and mood. DAX (the Digital Audio Exchange) is a marketplace that places ads programmatically across a wide network of music streaming, digital radio, and podcast inventory in one buy. Smart speakers and connected devices extend audio advertising into homes and cars through voice platforms.

Who is digital audio advertising best for?

Businesses that want the intimacy and engagement of audio with the targeting precision and measurability of digital. It works well for reaching younger, streaming-first audiences who listen to little traditional radio, and it pairs naturally with a radio campaign to extend reach into on-demand and streaming listening.

What should you know before you start?

You will need a produced audio ad, usually 15 or 30 seconds, and ideally a companion banner image. Campaigns can typically be set up and live within a few days once your creative is ready, which is faster than most broadcast routes. Because targeting and reporting are data-driven, you can see how the campaign is performing and adjust as you go, which is not something traditional radio offers in the same way.

How much does digital audio advertising cost?

Digital audio advertising is usually priced on a CPM basis (cost per thousand impressions), with UK rates commonly falling somewhere around £10 to £25 per thousand depending on the platform and how tightly you target. Spotify and premium targeted inventory sit toward the higher end; broader programmatic buys through DAX can be more efficient at scale. Many platforms have relatively low minimum spends, which makes digital audio accessible to smaller budgets.

The cost is shaped by:

Targeting depth is a major factor, because the more specific the audience, the higher the cost per thousand, though the waste tends to be lower. Platform matters, as premium environments cost more than broad networks. Ad format affects it too, with audio plus video or interactive formats priced above audio alone. And volume plays a part, since larger campaigns can improve the effective rate.

One thing worth understanding about this space is that it is still maturing, and buying routes vary a lot in price and transparency for what can be very similar inventory. The same streaming impression can be available through several different paths at different rates. That is simply how a fast-growing, fragmented market works, but it does mean the buying route makes a real difference to value. Seeing across the whole market, rather than through one platform’s self-serve tool, is where an independent buyer earns their place, because we can compare routes to the same audience and choose the most efficient one for you.

What is the difference between digital audio and radio advertising?

The core difference is how the ad is delivered. Radio is broadcast, so everyone tuned to a station hears the same ad at the same time, offering broad, immediate reach. Digital audio is served to individuals based on data, offering precise targeting and detailed measurement but usually across smaller, more fragmented audiences.

Neither replaces the other. Radio delivers scale, trust, and a shared live moment; digital audio delivers targeting, flexibility, and the ability to reach streaming-first listeners who are drifting away from traditional radio. Used together, they cover both the broad and the targeted ends of audio, which is why many campaigns run them side by side. Our guide to radio advertising covers the broadcast side in more detail.

Is digital audio advertising worth it?

For most businesses reaching consumers who stream, yes, digital audio is worth including, because it combines the engagement of audio with digital’s targeting and measurability at an accessible entry cost. It is one of the faster-growing advertising channels as listening shifts from radio to streaming and podcasts.

The honest qualification is that digital audio is usually a supporting and targeting channel rather than a standalone answer to every objective. It builds engaged reach efficiently, but if you need mass awareness quickly, broadcast radio or TV may do more of that job, and if you need direct clicks and conversions, it works best alongside digital display and search rather than on its own. The point of saying so is simple: it is a strong channel used for the right purpose, and we would rather help you place it well than oversell it.

Planning a digital audio campaign

Digital audio rewards two things: matching the targeting to the audience you actually want, and choosing an efficient buying route to reach them. Because we plan across the whole market and hold no platform of our own, we can compare Spotify, DAX, and other routes to the same audience and build the plan that gives you the best value.

Looking to understand how digital audio could work for your business, on its own or alongside radio and other channels?

Our digital audio advertising page explains how we plan and buy it, or feel free to reach out and get in touch to discuss your campaign.