Content delivery networks are like your underground plumbing. You don’t see them unless you work for a CDN provider. Yet without them, you can’t do anything online. No movies, no shopping, no video games, no live sports. Nothing that involves an application over the internet works without CDNs. Their importance in our daily lives is reflected in the numbers: the global CDN market reached $27.59 billion in 2024 and is expected to hit $144.91 billion by 2034.