This is the eighth post in the WCF 4.5 series. This post continues the previous posts on web-hosting features. This post is about the ASP.NET compatibility mode default change of WCF 4.5. Previous posts: 1. What’s new in WCF 4.5? let’s start with WCF configuration 2. What’s new in WCF 4.5? a single WSDL file 3. What’s new in WCF 4.5? Configuration tooltips and intellisense in config files 4. What’s new in WCF 4.5? Configuration validations 5. What’s new in WCF 4.5? Multiple authentication support...