What NEW features has WCF in .NET Framework 4 vs .NET Framework 3.5?

Question

What NEW features has WCF in .NET Framework 4 vs .NET Framework 3.5? What Is new, what was fixed (in general - I do not want to get into bug fixed numbers=)?

Answer 1

Nicholas Allen has an "alternative" list of what's new features:

• Simplified configuration
• Standard endpoints
• IIS hosting without an SVC file
• Discovery
• Routing service (previously included with Dublin)
• REST caching and help page
• Workflow services
• Non-destructive queue receive
• Simple byte stream encoding
• ETW tracing

See: http://blogs.msdn.com/drnick/archive/2009/08/14/what-s-new-in-wcf-4-alternative-list.aspx

Those sum up quite nicely what's been improved.

Also Santosh Benjamin has a blog post with links to a series of blog posts by Christian Weyer which extensively covers the new things in WCF 4.