Content Delivery Networks
Some of the content our applications deliver does not change very often, such as HTML pages, JavaScript, images, and video streams. Content Delivery Networks (CDNs) aim to provide static content that is distributed around the world. Acting either as a layer in front of your application or alongside it, they can provide cacheable content to clients much more quickly than a customized service. Some CDNs will also allow you to dynamically scale images and video based on the client and its network quality, or provide protection against distributed denial of service attacks, making them a valuable tool for any web-based service.