To understand why audience signaling is the ultimate competitive advantage, you have to understand how Google's AI actually works.
In the old days of Search and Display network campaigns, we used strict targeting. If you told Google to target “Women, aged 25-34, interested in enterprise software,” your ad only appeared to that exact demographic. If your ideal customer happened to be a 40 year old male who was actively searching for your exact solution, you missed the sale because he did not fit in the box.
With modern Performance Max campaigns, strict targeting is gone. Instead, we use Audience Signals.
An audience signal is not a restriction, it is a suggestion. You are essentially handing the algorithm a blueprint of your ideal customer and saying, “Start looking here.” Google uses your signal to find initial conversions, but if its machine learning detects that a totally different demographic is converting at a cheaper cost, it will proactively pivot and optimize toward that new audience.