Category Archives: Indigo

Posts related to Indigo and Web Services

WCF HTTP Preview

Check out, and let us know what you think.

We’ve been hard at work on the next version of WCF, and today at PDC Glenn unveiled the details of those investments. We’ve made a number of usability and functional improvements, including first-class integration with Async.NET and a comprehensive set of enhancements to WCF HTTP. We’ve posted a preview of the HTTP enhancements at, and eagerly await your feedback. More to come…

Back in the Office

One year later, I’m back from sabbatical and in my office (which has been moved to building 18). It’s a bit surreal to be back, though fun to be catching up on the past year of developments and reconnecting with our plans for WF and WCF. I’m looking forward to reengaging with our customers as well. More soon….

Ramping back up on the technical blog posts

I’ve been pretty quiet recently on the technical blog front, mostly because my work was in the dark depths of development. A few weeks ago, we released Beta 1 of Visual Studio 2010 which includes all of the technologies I’ve been working on for the past 3 years 🙂

One of the big components included in .Net 4.0 Beta1 is the WF4 framework that I unveiled at PDC. The team is blogging here, and I’ll be including ongoing tidbits for WF and WCF to help smooth out speed bumps encountered by our customers.

Writing custom languages

I’m sitting in one of the coolest talks at PDC. ChrisAn & GioDL are showing how you can use the nascent "Oslo" language technologies to write your own textual language. MGrammar has been described as yacc on crack.

You should check it out (probably starting tomorrow) at:

UPDATE: You can download the SDK here and start playing with writing your own custom language. Fun stuff!

WF 4.0: A First Look

On Monday afternoon I unveiled WF 4.0 at PDC 2008. With this public disclosure you will start seeing a lot more details of the WF system here.

For those of you that were able to attend my session in person, please fill out the evaluation form (we’re currently at about 5% participation).

For those that couldn’t join me in person, the session was videotaped and is available at Enjoy!

Interested in Performance?

Distributed applications are tricky. The internet is a fickle beast that will lost data at will and run counter to many intuitions. Getting distributed applications to run smoothly and performant at scale is particularly difficult.  There isn’t a single "go fast" silver bullet, rather it’s more of an art. At PDC this year you’ll have a great opportunity to learn about the Zen of WCF Performance and Scale at Nicholas Allen‘s lunch session. Enjoy!

WCF talks at PDC

Matt posted a great description of the WCF (and WF) talks we’re giving at PDC.

In particular there are two sessions that I’d like to call out.

The first is Ed Pinto’s session, where you’ll find out about the significant investments we’ve made to improve the WCF authoring experience:

WCF 4.0: Building WCF Services with WF in Microsoft .NET 4.0.

Eliminate the tradeoff between ease of service authoring and performant, scalable services. Hear about significant enhancements in Windows Communication Foundation (WCF) 4.0 and Windows Workflow Foundation (WF) 4.0 to deal with the ever increasing complexity of communication. Learn how to use WCF to correlate messages to service instances using transport, context, and application payloads. See how the new WF messaging activities enable the modeling of rich protocols. Learn how WCF provides a default host for workflows exposing features such as distributed compensation and discovery. See how service definition in XAML completes the union of WF and WCF with a unified authoring experience that simplifies configuration and is fully integrated with IIS activation and deployment.

Once you’ve built your services, you will need to deploy, host, and manage them.  Windows Server "Dublin" handles this complexity, and Dan Eshner will unveil the details here:

Hosting Workflows and Services

Hear about extensions being made to Windows Server to provide a feature-rich middle-tier execution and deployment environment for Windows Workflow Foundation (WF) and Windows Communication Foundation (WCF) applications. Learn about the architecture of this new extension, how it works, how to take advantage of it, and the features it provides that simplify deployment, management, and troubleshooting of workflows and services.