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Commentary on SOA, Enterprise Architecture, Application Modernization and Cloud Computing

Lawrence Wilkes

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Top Stories by Lawrence Wilkes

Or how to connect the architecture dots to support a smart connected planet. Introduction The notion of a connected planet is far from new. However, the number of connections as illustrated in figure 1 is growing at an exponential rate, and it is fast becoming a reality in which many organizations must operate. However, I doubt many organizations are preparing for this in a systematic way. More likely, experience suggests that dozens of connected ‘solutions' will permeate the organization via myriad routes and just add to the complexity of the business and IT landscape, becoming yet more spaghetti that someone is left to untangle. Architecture is key to dealing with this. However, architectural practices must evolve to themselves become more connected, and not a set of isolated disciplines as they are often practiced today. Hence, in this note as well as considering ... (more)

Application Migration Patterns for the Service-Oriented Cloud

As well as deploying new applications to the cloud, many organizations will also be considering the opportunities to migrate current applications to the cloud in search of reduced costs or SLA improvements. In this research note I consider several migration alternatives, expressed as a set of patterns. The patterns should serve as a useful way to communicate intent. When someone suggests that a current application could be migrated to the cloud, then these patterns should be a simple way to ask "what exactly do you mean by that, and what do you hope to achieve by doing so?" The ... (more)

Service Portfolio Planning and Architecture for Cloud Services

The concept that Services are provided ‘somewhere in the cloud’ has always been central to our vision of SOA and we often used the cloud metaphor to illustrate this. Some 15 years ago in our early CBD research at Texas Instruments Software we presented the notion of application solutions assembled from a ‘cloud of services’ though this was positioned more as a way to achieve technology independence as the notions of a public infrastructure provided in the cloud were not well developed then. The arrival of Web Services at the turn of the millennium provided a standardized mechanis... (more)

Service Concepts 101

The use of the term ‘Service' is somewhat overloaded. Everyone will have heard or used the terms Business Services, IT Services, Software Services, and now Cloud Services, and yet often there is much confusion and misunderstanding in their use. As my colleague David Sprott suggested in a CBDI Journal Report, "Everything is a Service" . In that report David suggested that the idea that "everything is a service" could be developed to clarify the taxonomy for Cloud Services and Services in the form of a Unified Service Model that would deliver convergence of business and IT perspe... (more)

Cloud Computing Reference Architectures, Models and Frameworks

Reference ‘Things’ A Reference Architecture (RA) “should” provide a blueprint or template architecture that can be reused by others wishing to adopt a similar solution. A Reference Model (RM) should explain the concepts and relationships that underlie the RA. At Everware-CBDI we then use the term Reference Framework (RF) as a container for both. Reference architectures, models and frameworks help to make sense of Cloud Computing. Unfortunately, such formality is absent from the various reference architectures, models and frameworks that have been published for Cloud Computing; t... (more)