What is an ad exchange?
Could you please elaborate on what an ad exchange is? I'm curious to understand how it operates within the digital advertising landscape. How does it differ from traditional advertising methods, and what benefits does it offer to advertisers and publishers alike? Is there a specific process that takes place when an ad is exchanged, and how does it ensure that the right ads are shown to the right audience? Lastly, are there any challenges or limitations that advertisers and publishers should be aware of when utilizing an ad exchange?