What are some alternatives?
CloudFlare - CloudFlare can be used by anyone with a website and their own domain, regardless of your choice in platform
FireEye Security Suite - An enterprise-grade security solution for mid-market customers, combining detection, protection, and response capabilities for network, email and endpoint.
Amazon CloudFront - Amazon CloudFront is a content delivery web service.
Oracle Dyn Managed DNS - Network Security
StackPath - Secure Content Delivery Network, DDoS, WAF Service
Advanced Security Analytics - Rapid advances in advanced analytics and machine learning are quickly changing the information security landscape.