Programmatic advertising uses technology to automatically reach target audiences across digital channels at optimal times. It involves ad impressions being placed up for auction in ad marketplaces in real-time, often within milliseconds. While programmatic advertising currently accounts for around 33% of digital ads globally, it is expected to continue growing significantly. Key components of programmatic advertising include demand-side platforms (DSPs) used by advertisers to buy ads, ad exchanges that facilitate real-time auctions, and supply-side platforms (SSPs) used by publishers to sell their ad space.