|Purge All||Fully supported||Fully supported|
|Instant Purge||Not supported||Unknown|
|Control panel||Fully supported||Fully supported|
|Origin Push||Not supported||Not supported|
|Origin Pull||Fully supported||Fully supported|
|Origin Shield||Fully supported||Unknown|
|GZIP Compression||Fully supported||Fully supported|
|Custom Rules||Fully supported||Unknown|
|HTTP/2 Protocol||Fully supported||Fully supported|
|SPDY Protocol||Not supported||Not supported|
|Raw Access Logs||Upon request||Fully supported|
|Real time statistics||Fully supported||Fully supported|
|Online signup||Not supported||Not supported|
|API||Purge, Statistics||Purge, Statistics, Configuration Management|
|Custom CNAMEs||Fully supported||Unknown|
|Shared SSL Certificates||Fully supported||Unknown|
|Custom SSL Certificates||Fully supported||Unknown|
|Wildcard SSL Certificates||Not supported||Unknown|
|Support||Phone and Email support||24⁄7 Phone and Email support|
|Video On Demand (VoD)||Not supported||Fully supported|
|RTMP Streaming||Not supported||Fully supported|
|Multiple CDNs||Not supported||Not supported|
|CDN balancing tech||Not supported||Fully supported|
|Storage||Fully supported||Additional costs|
|Global flat fee||N/A||N/A|
|NA/EU Traffic (low volume)||N/A||N/A|
|NA/EU Traffic (high volume)||N/A||N/A|
In 2014, Comcast debuted their CDN service. With their own CDN in place, Comcast can deliver a better experience to their already existing consumer base. Unique in the CDN landscape, we can label Comcast a B2C CDN service provider.
As the ISP, cable owner and CDN provider, Comcast is able to offer an excellent SLA and potentially lower pricing, when compared to 3rd party CDN providers who do not own the network they operate on.
The Comcast CDN is regional and offers PoPs within the US only. The CDN service is therefore not suited for businesses with a global userbase, unless it is combined with other CDN providers in a multi-CDN setup. Warpcache is a multi-CDN provider that offers the Comcast CDN in combination with others.
Comcast is a very suitable provider for a multi-CDN setup. Warpcache resells multiple providers, both in an integrated multi-CDN solution and separately.
CDNetworks has been around since 2000, and is currently headquartered in Seoul. The company has raised capital with Shinhan Private Equity, Goldman Sachs and Oak Investment Partners, and acquired CDN competitor Panther Express in 2009. The company was bought by Japanese Telco KDDI in 2011. The provider has 169 points of presence (PoPs) worldwide.
CDNetworks offers the usual services within the CDN ecosystem, such as DDoS protection, cloud storage, Web Application Firewall (WAF), managed DNS with load balancing and video acceleration.
The CDN provider has a strong presence in emerging Internet markets such as China, Russia, India and South America. The company operates in mainland China and has been doing so for over 10 years. Currently, CDNetworks has 21 PoPs within China, which are mostly concentrated in the east of the country. The company is licensed by the Chinese government, and their CDNetworks China Acceleration service can be an alternative to homegrown CDN providers ChinaNetCenter and ChinaCache.
Similar to China acceleration, CDNetworks has a special focus on Russia. With 16 PoPs across the country, and a partnership with network operator MegaFon, CDNetworks offers a broad range of delivery services in Russia.