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Imperva versus Limelight

Easily compare Imperva and Limelight for POP locations, products, pricing, features & support. We hope this helps you better understand the similarities and differences between these content delivery networks.

Imperva logo Limelight logo

Company

Company Imperva Limelight
Short profile Imperva's CDN (formerly Incapsula) makes your websites and applications faster, more reliable and safer. A global network of servers provides content caching, load balancing and failover, while an enterprise-grade cloud web application firewall and DDoS protection safeguard your site from the latest threats. 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

Product Imperva Limelight
Dynamic content deliveryNon-cacheable content delivery. User login, shopping cart ... Available/supported Available/supported
Small file deliveryStatic object delivery; caching of small files (file size <1 MB) Available/supported Available/supported
Large file deliveryStatic object delivery; caching of large files (file size >1 MB) Available/supported Available/supported
Live videoDelivery of live video. RTMP? Transcoding/transmuxing? Not available/supported Available/supported
Video on demandDelivery of on demand video Not available/supported Available/supported
Image OptimizationAutomatic image compression/optimization Available/supported Extra costs
DNSAuthoritative DNS for customer domain Partially Available/supported
WAFWeb Application Firewall Available/supported Available/supported
Anti-DDoSDDoS attack protection. Specific product(s) for this. Available/supported Available/supported
Private CDNDedicated edge resources & custom configs Not available/supported Available/supported

Network

Region Imperva Limelight
North America 11 17
Latin America 2 9
Europe 12 12
Russia & CIS 1 0
Asia, excl China 11 16
China 0 10
Oceania 3 1
Middle-East 3 4
Africa 1 2

Pricing

Pricing & contract duration Imperva Limelight
Minimum contract term Unknown 12 months
Minimum monthly costs Unknown Varies by product and service
Requests costsCustomers pay for client to CDN requests Unknown None
Ingress costsCustomers pay for origin-to-CDN bytes transferred Unknown Yes
NA/EU traffic (low volume) Unknown Confidential, market competitive
APAC traffic (low volume) Unknown Confidential, market competitive
LATAM traffic (low volume) Unknown Confidential, market competitive

Features

Web acceleration Imperva Limelight
Instant setupSign up, configure, start testing. Available/supported Available/supported
Change propagation delayHow fast do config changes propagate to all POPs? Available/supported Instant Partially A few minutes
Apex/root domain OK Blog: Root domain on CDN and performanceNo performance degradation when using http(s)://domain.com Available/supported Anycasted network (regional) Extra costs Alias support optional
HTTP/2 Available/supported FAQ Available/supported
IPv6Do the edge servers have IPv6? Available/supported IPv6 support Available/supported
Compression CDN Guide: CompressionReduce file size for faster delivery Compress on the edge Resend from origin or compress on edge
Origin pull - protocolHTTP only or HTTPS possible too? Available/supported HTTP and HTTPS.
tooltip Can be IP address
Available/supported HTTP and HTTPS.
tooltip Match protocol
Origin pull - Host headerUse client > edge value? Set specific value? Available/supported Can configure specific other Host header.
tooltip Forward client request Host header is possible
Available/supported Configure specific other Host header
tooltip CDN can also forward client request Host header to origin
Origin shieldOne POP pulls from origin, other POPs pull from the shield POP Extra costs Available/supported Self-service control
Push / uploadStore your content directly on CDN, no customer origin Not available/supported Extra costs Origin Storage. Upload via UI or API
Cache control - CDN caching Available/supported Granular control/override rules possible Available/supported
Cache control - client caching Available/supported Granular control/override rules possible Available/supported
Serve stale CDN Guide: Serve staleCDN serves cached but expired content in case origin is in trouble Available/supported Available/supported
Purge CDN Guide: PurgeInvalidate or delete cached objects on CDN Available/supported Instant Available/supported Instant
Purge - capabilities Available/supported Purge all, by directory, by file extension, by tag(s) Available/supported Purge by path, all, pattern, wildcard.
Analytics Available/supported Real time perf and security events dashboard Available/supported
Log files Available/supported Available via UI, API, or full SIEM integration
tooltip Logs are not delayed
Extra costs Download logs via FTP, SFTP, rsync and scp
tooltip Delay is ~10 minutes
API Available/supported Purge, analytics, configuration Available/supported Purge, analytics, configuration, OVP, origin storage
HTTPS & Content Protection Imperva Limelight
CDN domain HTTPSUse the CDN's domain, like cloudfront.net Available/supported CDN and SSL/TLS Available/supported Free. SNI
Customer domain HTTPSYour domain in the CDN's certificate Available/supported Extra costs
Customer cert HTTPSYour certificate on the CDN Available/supported Extra costs
Token authentication Available/supported Via authentication header Available/supported MediaVault. Highly customizable
Geo blocking Available/supported Available/supported IP access control by Geo and IP
Hotlink protectionThird parties cannot deeplink to your content Available/supported Available/supported MediaVault. Highly customizable
Basic authenticationUser logs in on the CDN to get content Available/supported Two Factor Authentication Available/supported MediaVault. Highly customizable
IP white/blacklisting Available/supported IP address/ranges/subnets, self-service in UI Available/supported MediaVault. Highly customizable

Support

Customer support Imperva Limelight
Documentation Available/supported Yes, public Partially Yes, but not public
Humans Available/supported Imperva’s team of support engineers deliver technical assistance 24x7x365 via phone, email, or online via the self service portal Available/supported All customers get 24/7 email and phone support. Customers who purchase Advanced Services have access to a designated Limelight Advanced Services team member.