Company

Company	Verizon Digital Media Services	Imperva
Short profile	Verizon Digital Media Services is a division of Verizon. Founded in 2011, VDMS acquired EdgeCast CDN in 2013 and startup upLynk for their streaming video technology. VDMS has a focus on streaming video and a goal to be a leading provider of OTT services.	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.

Products

Product	Verizon Digital Media Services	Imperva
Dynamic content deliveryNon-cacheable content delivery. User login, shopping cart ...
Small file deliveryStatic object delivery; caching of small files (file size <1 MB)
Large file deliveryStatic object delivery; caching of large files (file size >1 MB)
Live videoDelivery of live video. RTMP? Transcoding/transmuxing?
Video on demandDelivery of on demand video
Image OptimizationAutomatic image compression/optimization
DNSAuthoritative DNS for customer domain
WAFWeb Application Firewall
Anti-DDoSDDoS attack protection. Specific product(s) for this.
Private CDNDedicated edge resources & custom configs

Network

Region	Verizon Digital Media Services	Imperva
North America	12	11
Latin America	11	2
Europe	13	12
Russia & CIS	0	1
Asia, excl China	12	11
China	0	0
Oceania	3	3
Middle-East	2	3
Africa	0	1

Pricing

Pricing & contract duration	Verizon Digital Media Services	Imperva
Minimum contract term	12 months	Unknown
Minimum monthly costs	Unknown	Unknown
Requests costsCustomers pay for client to CDN requests	Unknown	Unknown
Ingress costsCustomers pay for origin-to-CDN bytes transferred	Unknown	Unknown
NA/EU traffic (low volume)	Unknown	Unknown
APAC traffic (low volume)	Unknown	Unknown
LATAM traffic (low volume)	Unknown	Unknown

Features

Web acceleration	Verizon Digital Media Services	Imperva
Instant setupSign up, configure, start testing.	Can't sign up and get started. Must talk to sales.
Change propagation delayHow fast do config changes propagate to all POPs?	60 - 90 minutes	Instant
Apex/root domain OK No performance degradation when using http(s)://domain.com	Anycasted network (regional)	Anycasted network (regional)
HTTP/2		FAQ
IPv6Do the edge servers have IPv6?		IPv6 support
Compression Reduce file size for faster delivery	Resend, or compress on edge Always fetch compressed from origin	Compress on the edge
Origin pull - protocolHTTP only or HTTPS possible too?	HTTP and HTTPS	HTTP and HTTPS. Can be IP address
Origin pull - Host headerUse client > edge value? Set specific value?	Configure specific other Host header CDN can also forward client request Host header to origin	Can configure specific other Host header. Forward client request Host header is possible
Origin shieldOne POP pulls from origin, other POPs pull from the shield POP	Single POP shield or multiple. Full control Origin Shield is part of Basic Rules Engine
Push / uploadStore your content directly on CDN, no customer origin
Cache control - CDN caching	By default, CDN honors origin headers Full and granular control is possible with Rules Engine ($)	Granular control/override rules possible
Cache control - client caching	By default, CDN honors origin headers Full and granular control is possible with Rules Engine ($)	Granular control/override rules possible
Serve stale CDN serves cached but expired content in case origin is in trouble	Serve stale is part of Advanced Rules Engine
Purge Invalidate or delete cached objects on CDN	No longer than 1 min, often much faster	Instant
Purge - capabilities	Purge all, purge by directory, by file extension	Purge all, by directory, by file extension, by tag(s)
Analytics	Many metrics in the UI Custom reports ($) available	Real time perf and security events dashboard
Log files	Takes up to 24h to get all log entries	Available via UI, API, or full SIEM integration Logs are not delayed
API	Purge, configuration (basics only), analytics No API yet for Rules Engine	Purge, analytics, configuration

HTTPS & Content Protection	Verizon Digital Media Services	Imperva
CDN domain HTTPSUse the CDN's domain, like cloudfront.net		CDN and SSL/TLS
Customer domain HTTPSYour domain in the CDN's certificate	Non-SNI. Pricing is custom. Wildcard possible
Customer cert HTTPSYour certificate on the CDN	Pricing is custom
Token authentication	Requires Basic or Advanced Rules Engine	Via authentication header
Geo blocking	Requires Basic or Advanced Rules Engine
Hotlink protectionThird parties cannot deeplink to your content	Requires Basic or Advanced Rules Engine
Basic authenticationUser logs in on the CDN to get content		Two Factor Authentication
IP white/blacklisting	Requires Basic or Advanced Rules Engine	IP address/ranges/subnets, self-service in UI

Support

Customer support	Verizon Digital Media Services	Imperva
Documentation	Good documentation but not public	Yes, public
Humans	All customers get 24/7 email and phone support.	Imperva’s team of support engineers deliver technical assistance 24x7x365 via phone, email, or online via the self service portal