How do content delivery networks (CDN) improve the streaming experience?

Content delivery networks (CDNs) enhance the streaming experience primarily by decreasing the distance between customers and servers. This reduction in distance allows for faster data transfer rates, which improves the overall speed and reliability of content delivery. When content is stored on servers strategically located closer to users, the latency is minimized, resulting in quicker loading times and more fluid playback. Users benefit from reduced buffering periods and interruptions, which is crucial for a seamless streaming experience.

In contrast, higher resolution content does not necessarily correlate with improved performance but typically requires more bandwidth. Backup servers are beneficial for availability but do not directly enhance the immediate streaming experience. Eliminating buffering entirely is an ideal goal but not entirely feasible with the current limitations in technology and internet speeds. Thus, the core function of a CDN lies in optimizing data transmission through strategic location and distribution of content.