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In this article, Adrien Louis discusses the pros and cons of two topology alternatives for ESB-based SOAs: A single ESB for the company vs. a system of "departmental" ESBs that are connected to each other. Adrien describes how the alternatives affect issues such as administration, business monitoring, governance, reliability, and orchestration.
With SOA 2.0 dead and the REST vs SOA vs Web Services debates simmering less fiercely of late, some in the industry have started to talk about Web Oriented Architecture (WOA). But is this different to anything that already exists (e.g., REST)? If so, why and how does it help developers and deployers? Burton Group's Anne Thomas Manes believes it is a term too far and adds nothing to the debate.
Jim Webber re-ignited some interesting discussions about the need (or not) for Cohesive Services within SOA. What started as a fairly innocuous post has certainly generated a lot of debate.
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One of the constraints defined for the architectural style known as REST is "hypermedia as the engine of application state". Mark Baker, well-known for being one of the first who advocated the REST style instead of the mainstream web services approach, discusses that the hypermedia constraints means in practice and why it is essential to RESTful design.
This article discusses the need for asynchronous services when you build an application using a service-oriented architecture. Building asynchronous services can get complicated, but is made straightforward using Service Component Architecture (SCA). The steps involved in using SCA to create an asynchronous service and asynchronous service client are described in this article.
In this interview, recorded at QCon SF, Stefan Tilkov talks to noted Web services expert and open source developer Dan Diephouse about the benefits of using the Atom Pub and Atom standards for business applications, pros and cons of using REST, and upcoming features of the Apache CXF web services stack.
In this interview Stefan Tilkov, innoQ SOA consultant and InfoQ SOA Community editor, talks about his views about SOA. Topics covered include the definition and role of SOA in general, different styles of implementing it, its applications in the real world, and the role of ESBs.
In one of the most entertaining presentations on the topic ever, Dr. Jim Webber debunks myths about the mainstream ESB concept and explains how a lightweight approach can yield real benefits without giving in to vendor pressure. Jim claims that an ESB often ends up being just a thin veneer on an existing mess, and how an approach that doesn't put intelligence into the network is superior.
In this presentation, Google architect Gregor Hohpe introduces various concepts for to manage more complex interactions between services, including conversations, choreography, and orchestration. He provides a down-to-earth look at these concepts along with the associated Web services standards like WS-BPEL and WS-CDL, and identifies common patterns in service conversation.
