YouTube ads: crystal clear 4K, buttery smooth 60fps, loads instantly even on dial-up. YouTube video you actually want to watch: buffering at 144p like it's 2005, pixelated beyond recognition, and somehow still manages to freeze every 3 seconds. The irony is that their ad delivery infrastructure probably has better uptime than most production servers. YouTube's ad CDN is basically the only thing in tech that actually works flawlessly 100% of the time—because money talks and content walks.