Where to Handle ASP.NET Exceptions

Unless some special exception is expected, you wouldn't want to handle general exceptions in the page code. Exception handling belongs in Global.asax

 http://www.codeproject.com/Articles/241066/How-to-Validate-ASP-NET-Web-Forms-Using-Business-R

EAR vs. WAR

META-INF
http://help.adobe.com/en_US/ColdFusion/10.0/Installing/WSc3ff6d0ea77859461172e0811cdec18c28-7fec.html#WSc3ff6d0ea77859461172e0811cdec18c28-7fe6