The Cisco Content Engines are content networking products that accelerate content delivery, ensuring maximum scalability and availability of content. By combining Cisco caching technologies with acquired technologies from Sightpath and Tasmania Network Systems, the Cisco Content Engines offer a broad range of content services that significantly expand the value of your Cisco IOS infrastructure. Cisco Content Engines are the content delivery elements of the Content Delivery Network (CDN) solution from Cisco Systems. The CDN service from Cisco enables the proactive distribution of rich media files to content engines at the network edges for local access to e-business applications such as e-learning, e-commerce, knowledge sharing, and corporate communications. Designed for affordability and ease of installation, the CDN solution enables you to quickly deploy high-impact, high-bandwidth rich media, such as high-quality streaming video - with minimal administration.Cisco Content Engines also accelerate content delivery by transparently caching frequently accessed content and then locally fulfilling content requests rather than traversing the Internet/intranet to a distant server farm. This solution helps to protect your network from uncontrollable bottlenecks and accelerate the delivery of content, enabling service providers to offer higher service quality and enabling enterprise employees to be more productive. By caching content such as HTTP and FTP traffic, Cisco Content Engines minimize redundant network traffic that traverses WAN links. As a result, WAN bandwidth costs either decrease or grow less quickly. This bandwidth optimization increases network capacity for additional users/traffic and for new services, such as voice. Typical bandwidth savings range from 25 to 60 percent. In addition, the Cisco Content Engines can be deployed in front of a web site to dramatically increase performance. By transparently caching inbound requests for content, the content engines can offload a significant amount of traffic and TCP connections from origin servers.