Company

Company	Tencent Cloud	Limelight
Short profile	Tencent Cloud is a leading global CDN that has resources distributed in 50+ countries and the highest service volume of all CDNs in Asia. It has a massive network with 1,100+ nodes in mainland China, extending beyond major ISPs to more than a dozen local providers.	Limelight (NASDAQ: LLNW) has been a strong player in the CDN market since 2001. Limelight has a large, high-capacity network with POPs on many continents and offers digital content delivery, live and on-demand video, cloud security and edge computing services.

Products

• = Yes
• = Sort of/partially
• = No
• = Unknown

Product	Tencent Cloud	Limelight
Dynamic content deliveryNon-cacheable content delivery. User login, shopping cart ...	ECDN (Enterprise CDN)	Web Acceleration Services
Small file deliveryStatic object delivery; caching of small files (file size <1 MB)	CDN	Content Delivery Services
Large file deliveryStatic object delivery; caching of large files (file size >1 MB)	CDN	Content Delivery Services
Live videoDelivery of live video. RTMP? Transcoding/transmuxing?	LVB (Live Video Broadcast )	Realtime and Live Streaming
Video on demandDelivery of on demand video	VOD	Video Delivery Services
Image OptimizationAutomatic image transformation/compression/optimization		Image Optimization optional
DNSAuthoritative DNS for customer domain	DNSpod	Managed DNS Services
WAFWeb Application Firewall	WAF	Web Application Firewall
Anti-DDoSDDoS attack protection. Specific product(s) for this.	Anti-DDoS Advanced Anti-DDoS Pro also available	DDoS Attack Interceptor
Private CDNDedicated edge resources & custom configs		Global Private CDN
Edge ComputeRun your code on CDN edge servers	Serverless Cloud Function	Network-Enhanced Edge Compute
Origin StorageReduce load on origin. Faster cache miss responses.	Cloud Object Storage	Origin Storage

Network

Region	Tencent Cloud	Limelight
North America	11	20
Latin America	2	9
Europe	6	15
Russia & CIS	1	0
Asia excl. China	21	16
China	1100	10
Oceania	1	3
Middle-East	4	9
Africa	1	3

Pricing

Pricing & contract duration	Tencent Cloud	Limelight
Minimum contract term	None	12 months
Minimum monthly costs	None	Varies by product and service
Requests costsCustomers pay for client to CDN requests	None	None
Ingress costsCustomers pay for origin-to-CDN bytes transferred	None	Yes
NA/EU traffic (low volume)	$0.055 per GB	Confidential, market competitive
APAC traffic (low volume)	$0.081 - $0.12 per GB (varies per region)	Confidential, market competitive
LATAM traffic (low volume)	$0.12 per GB	Confidential, market competitive

Features

• = Yes
• = Sort of/partially
• = No
• = Extra costs
• = Unknown

Web acceleration	Tencent Cloud	Limelight
Instant setupSign up, configure, start testing.	Self-service, credit card required
Change propagation delayHow fast do config changes propagate to all POPs?	5 minutes	A few minutes
Apex/root domain OK No performance degradation when using http(s)://domain.com	Use DNSPod for DNS	Alias support optional
HTTP/2
IPv6Do the edge servers have IPv6?
Compression Reduce file size for faster delivery	Resend from origin, or compress on edge Fetch compressed or uncompressed from origin (configurable)	Resend from origin, or compress on edge
Origin pull - protocolHTTP only or HTTPS possible too?	HTTP, HTTPS, match protocol	HTTP and HTTPS. Match protocol
Origin pull - Host headerUse client > edge value? Set specific value?	Can be IP address or hostname Can be same host as in client-to-CDN requests	Configure specific other Host header CDN can also forward client request Host header to origin
Origin ShieldOne POP pulls from origin, other POPs pull from the shield POP	Custom implementation by Tencent DevOps team	Self-service control
Push / uploadStore your content directly on CDN, no customer origin	Cloud Object Storage with free tier. Upload in the portal or via API	Origin Storage. Upload via UI or API
Cache control - CDN caching	Full and granular control
Cache control - client caching	Full and granular control
Serve Stale CDN serves cached but expired content in case origin is in trouble	Serve stale if origin sends 5xx
Purge Invalidate or delete cached objects on CDN	5 minutes	Instant
Purge - capabilities	Purge all, purge by directory	Purge by path, all, pattern, wildcard.
Analytics	Many metrics available in console and via API
Log files	W3C formatted. Available for download in console and via API. Log roll period and delay depends on traffic volume.	Download logs via FTP, SFTP, rsync and scp Delay is ~10 minutes
API	Purge, configuration, analytics, logs	Purge, analytics, configuration, OVP, origin storage

HTTPS & Content Protection	Tencent Cloud	Limelight
CDN domain HTTPSUse the CDN's domain, like cloudfront.net		Free. SNI
Customer domain HTTPSYour domain in the CDN's certificate	SNI. First 20 DV certs are free. Wildcard allowed TrustAsia is the Certificate Authority
Customer cert HTTPSYour certificate on the CDN	SNI and free. Wildcard allowed.
Token authentication	4 types of token/URL signing available	MediaVault. Highly customizable
Geo blocking	Not self-service, support is needed	IP access control by Geo and IP
Hotlink protectionThird parties cannot deeplink to your content	Based on Referrer or IP address	MediaVault. Highly customizable
Basic authenticationUser logs in on the CDN to get content		MediaVault. Highly customizable
IP white/blacklisting	Console and API. Block/allow individual IPs and IP ranges	MediaVault. Highly customizable

Support

Customer support	Tencent Cloud	Limelight
Documentation	Good, extensive and public documentation	Yes, but not public
Humans	24/7 support via the console. Multiple VIP support packages are available	All customers get 24/7 email and phone support. Customers who purchase Advanced Services have access to a designated Limelight Advanced Services team member.