In the context of video distribution, we define edge as the CDN server closest to the video recipient. At the time of the first request for a video file, the edge server has the initial role of performing the download at the origin server. In addition, it also delivers the content to the recipient, saving a local copy of the video so that future deliveries to users in the same region are much faster and more effective.
Many data center managers have traditionally had problems with latency. These have increased over the last few years due to trends such as Big Data and streaming video, so solutions have had to be found to address this in the shortest possible time.
Recipients will always demand immediate access from any device, as advances in multiple aspects have made latency virtually unacceptable today. To control this problem, edge data centers are used as a quality and low-cost way to guarantee functionality when providing the user.