What are some alternatives?
CloudFlare - CloudFlare can be used by anyone with a website and their own domain, regardless of your choice in platform
Amazon CloudFront - Amazon CloudFront is a content delivery web service.
StackPath - Secure Content Delivery Network, DDoS, WAF Service
Akamai - Akamai is the leading content delivery network (CDN) services provider for media and software delivery, and cloud security solutions.
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.
WebARX - Website Protection, Managed Website Security & Website Monitoring