CDN requests refer to the number of requests made by users to the Content Delivery Network (CDN) edge servers to retrieve content. A CDN is a distributed network of servers that caches and delivers content to users from edge locations close to them. When a user requests content, such as a web page, image, or video, the request is directed to the nearest CDN edge server. The edge server then retrieves the content from the origin server or its cache memory and delivers it to the user. The number of CDN requests can be an important metric for measuring the performance and usage of a CDN, as it can indicate the level of traffic and demand for content in the network.