An origin shield is a protective measure that shields your origin server(s) from overload, ensuring high availability, performance and uptime. While no one size fits all in terms of how a company should structure their origin shield strategy, an origin shield is always a good idea to reduce the load on your origin server and maintain high-performance content delivery.

When it comes to deploying video -- both on-demand and live -- content and delivering with a good quality of experience (QoE), there is no one-size-fits-all approach. But for almost any video streaming company, a multi-CDN strategy is needed to ensure that QoE and the ability to scale up to deliver it. 

"Can Varnish go to the backend and check the content freshness. FOR.EVERY.SINGLE.REQUEST?"