What are some alternatives?
Amazon CloudFront - Amazon CloudFront is a content delivery web service.
Akamai - Akamai is the leading content delivery network (CDN) services provider for media and software delivery, and cloud security solutions.
Incapsula - Incapsula is a Security CDN that makes any website safer, faster and more reliable. 5 minute setup will make a world of difference.
MaxCDN - Make your websites and apps faster, purge and provision content instantly, and get CDN analytics in real time. Get a free test account today.
Fastly - Real-time CDN
Sucuri - Website Protection, Malware Removal, and Blacklist Prevention