Origin Shield is implemented to safeguard your origin server during periods of high request loads. By placing a shield server between the CDN edge server and your origin server, the content is fetched from your origin by the shield server and then delivered to the CDN edge server. This approach ensures the efficiency of your origin server and maximizes the speed at which content is served. By utilizing Origin Shield, you can effectively manage and protect your origin server, enhancing its performance and providing optimal delivery of content through the CDN.