Content Delivery Network (CDN)

A content delivery network is a globally distributed set of servers that cache and deliver video from locations near each viewer, reducing latency and buffering. For video platforms the CDN handles scale and speed, while protection comes from the encryption, DRM, and access controls layered on top of it.

What is a CDN?

A content delivery network (CDN) is a globally distributed set of edge servers that cache and deliver content from locations close to each viewer. For video, it is what makes streaming fast and reliable at scale across regions.

How It Works for Video

Instead of every viewer pulling video from one origin server, the CDN caches segments at edge locations worldwide. A viewer in one country is served from a nearby edge, cutting latency and reducing buffering, and the origin is shielded from load spikes during popular releases or live events.

CDN and Security

Speed, not protection: A CDN accelerates delivery but does not by itself stop downloading.
Enforcement point: CDNs can enforce signed URLs, tokens, and geo rules at the edge.
Works with DRM: Encrypted segments are cached like any other, with keys handled separately by the license server.

For Platform Owners

A good secure video platform pairs global CDN delivery with encryption, DRM, and edge-enforced access control, so you get both performance and protection rather than one at the expense of the other.