Microsoft's cloud platform Azure has a new addition to the family. All public regions now have the Web Application Firewall available, following its announcement about six months ago. A Web Application Firewall (WAF) can help secure online applications without the need to make modifications to programs.
Yousef Khalidi, CVP for Azure Networking, says the service offers "SSL termination, true round robin load distribution, cookie-based session affinity, multi-site hosting, and URL path based routing".
This should help protect applications from a number of different threats including SQL Injection (which apps should be designed against in my view), cross-site scripting, and a number of other potential nasties.
There are also monitoring tools and the WAF can be customised.