Blogs @ IRM

At IRM we often use this picture to talk about the stable parts of the business. Actually we have used it at least during the eight years I‘ve been working here. The least stable part is the organisation itself. Many of us have been affected by organisational changes during the last year and just as many of us will be affected by a change this ...

In my struggle to use Domain-Driven Design (DDD) in better ways to get more value out of it and not ending up with anemic models, I began reading about Command Query Responsibility Segregation (CQRS) and Event Sourcing. These are two patterns that fit very well with DDD and two of the most influent thinkers in this area is Greg Young and Udi ...

… is the title of a great post by Vibro that can be found here. This is an important subject and in all project where I have used claims and STS I also wanted the claims on the client. When cracking my own STS (before WIF) I always used the display token to get them from the identity provider (IP, aka the STS) so that seems to be in the line with ...

Even though I believe that it has been too many manifestos lately and doubting their real value, I think that Herbjörn and the other authors of the SOA Manifesto have managed to capture important things about SOA in a concise way. Congratulations! Their statements about what they have come to prioritize are mostly the same for any Enterprise ...

For all readers that understand Swedish, you are all very welcome on a free seminar about how to do the A(rchitecture) in SOA. The seminar will be in Stockholm on the 24th of April. If you ask me to nail down what the primary goals of service-oriented architecture (SOA) is all about, I would pick two things: Business agility Business ...

On thursday, me and Herbjörn, will be presenting at IASA’s event ITARC09 (swedish) about cloud computing. The subject is about how to handle Identity and Single-Sign-On when moving applications and services to the cloud. Of course we will cover a lot about Security Token Service (STS), claims and so on, but one slide that we had to cut was about ...

One of the first results delivered from pattern & practices was the Application Architecture Guide, and if I remember correctly that was back in 2002 or 2003. That's a long time ago considering the speed in which .NET Framework and related technologies has progressed and also the big focus shifts in many areas like project methodolgy, DDD vs ...

EAI is an acronym for Enterprise Application Integration, which is something that we have created to solve the fact that we for many years have created IT systems that are isolated islands, most often not supporting business process, but rather functions in the company. When companies began to become process oriented we needed to integrate this ...

Scott Watermasysk has a great post comparing the available cloud options, which is a must read if you are interested in cloud computing.

So PDC is over for this time, but PDC 2009 is already announced, so we might not need to wait three years to the next. In this post I will try to summaries a great week. Windows Azure I think this announment was expected, but I must say that the first impression is that it seems quite complete. After having the head spinning for a while I can ...

pattern & practices are working on a new guide, called "Improving Web Services Security"k which is now available as a beta on codeplex. I haven't read it yet, but by just browsing throught the index and some of the initial chapters I can say that it looks very interesting. WCF is a more complex environment, than the old stacks that ...

Dominick Baier blogs about his, Barry Dorrans and David Christiansen SharpSTS for Information Cards (Cardspace).

A Security Token Service (STS) is a web service that issues security tokens. A security token can be used for encrypting and signing messages, and it can be used to carry information about a user (claims). One common security token in a windows environment is a Kerberos Security Token that carries information about the current windows user. ...

Yesterday Christian Weyer (thinktecture) wrote about two interesting SOA-related announcements from Microsoft. Both was totally new for me. The first is Microsoft Managed Services Engine (MSE) that ''enables service virtualization through a Service Repository'' and by doing so provides ''the ability to support versioning, abstraction, management, ...

When creating services in SOA it's very common need, for one service to publish events of different kinds so that other services can react on them. This is called Event Driven Architecture (EDA) and one good blog that I use to follow in the space of SOA and EDA is called exactly that. Except for events there is also a common need for services to ...

I enjoy reading Nick Mallik's blog even though the post often are quite long, but also well written. He often manages to express the thoughts that I have on architecture in general and SOA in particularly. A while ago he wrote about the importance of the data and why you need to understand it (in a post called ''How is Business Process Management ...

The big Swedish newspaper for the IT industry recently wrote about a study (Benchmarking: Service-Oriented Architecture by Nucleus Research) showing that SOA has a bad return on investment (ROI). To me the article seems to be very focused on the technology, as if SOA was a product that you can buy and install. It talks about ''few companies has ...

During the last couple of years I have been reading that CRUD (Create, Read, Update, Delete) interfaces is bad design for services in SOA. For example have Ron Jacobs published it as an anti-pattern in his article ''Principles of Service Design: Service Patterns and Anti-Patterns''. Yesterday Pablo (aka Cibrax) wrote a post about the subject, ...

In my experience most architects and designers wants to use UML As Sketch. The UML stencils in Visio are not so good for this, but as Johan blogged about (how could I miss that?), Pavel Hruby has published a great UML stencil.

I've just finished reading ''Service Orient or Be Doomed!'' written by Jason Bloomberg and Ronald Schmelzer. The authors almost directly declares that this is not a technology book, but rather a book about business and how technology will affect business and what advantages it can bring. This promise of not becoming techie (even though they ...