Episode 129 of The Streaming Tech Podcast digs into the quiet infrastructure arms race between Netflix and Spotify. Both streaming giants are shifting traffic away from public cloud providers and building their own content delivery networks (CDNs). Lucas explains why Netflix's Open Connect appliances now handle over 95% of its streaming traffic, cutting cloud costs by an estimated $1 billion per year. Luna brings fresh data: with Netflix shares at $68.89 and Spotify at $468.99 as of July 23, 2026, the economics of owning the pipe are increasingly compelling. We break down the hardware choices — Netflix uses custom servers in ISP data centers, Spotify leans on edge caching partnerships — and what this means for latency, reliability, and the bottom line. If you've ever wondered why your 4K stream starts instantly while a competitor's buffers, this episode has the answer. No hype, just the engineering and business logic behind one of the biggest hidden trends in streaming technology.