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; these frequently mix elements of architecture and model, and then
apply one of the terms seemingly at random.
In developing the CBDI-Service Architecture and Engineering Reference
Framework (SAE) in support of SOA (Service Oriented Architecture)
Everware-CBDI separated out various parts as sho... (more)
Cloud Computing is intrinsically service-based. But this is not just in the
highly generalized sense of the term ‘service’, but also in the more
specific Service Oriented Architecture (SOA) use of the term, where
capabilities are provided via published service interfaces. In this research
note we consider why SOA should not be forgotten just because more
fashionable terms have risen to the top of the toybox.
It might be easy to conclude that SOA was yesterday’s issue. In fact
according to some pundits SOA is dead and business transformation,
application and IT modernization, and... (more)
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)
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)
I had requests from some of our certification students as to whether they
could get the elearning materials in some other format they could study and
use offline. Though elearning aids understanding with animations and voice
overs, there is no doubt that having a printed copy to hand also has other
uses - such as for reference - as well as convenience and the familiarity of
a tried and trusted format.
Consequently, our SOA Fundamentals eLearning materials are now available in
printed book form.
SOA Fundamentals is not a pure technology book, but covers a wide range of
topics inc... (more)