A quiet milestone passed this year. Digital now accounts for 74.4 percent of all advertising spend worldwide, close to 862 billion dollars, and it is still growing at around 9 percent a year while older formats flatten. Advertising overall represents about 1 percent of global GDP, and three quarters of that vast sum now flows through screens and algorithms rather than print, billboards and broadcast.
Digital does not mean what it used to
The word digital now covers a lot of ground: search ads, social feeds, in-app placements, retail media and video. What ties them together is that a system, not a person, decides who sees what. That is the same shift powering AI assistants, which are simply the next system to sit between a buyer's question and the answer they receive. When three quarters of ad money already runs through automated surfaces, an assistant curating those surfaces is not a break from the trend, it is the trend arriving at its logical next step.
For a brand, the lesson is that being legible to machines has quietly become the whole game across paid and organic alike. The systems allocating your paid impressions and the assistants composing organic answers reward the same clarity and structure, a theme we develop in where the advertising trillion goes.
What this means for your business
If most of your market's advertising is already digital, your competitors are already optimising for machine-mediated distribution, whether or not they call it that. The brands that will pull ahead are the ones that treat AI visibility as the next layer of the same discipline, not a separate experiment. Make your content clean, structured and quotable, and it works harder across every automated surface at once. Where buyers actually find you across all channels is set out in how buyers discover brands in 2026.