http://www.soamag.com The SOA Magazine is a monthly online publication provided by SOA Systems Inc. and Prentice Hall/PearsonPTR and is officially associated with the "Prentice Hall Service-Oriented Computing Series from Thomas Erl." SOA en-us Copyright 2009-2010, SOA Systems Inc. http://soamag.com/I46/0111-2.php Arguably computation models seen in client space are much more diverse than those in the server space proper. For servers, there are essentially two, the earlier model of static consolidation and the more recent dynamic model where virtual machines lightly bound to their physical hosts and can be moved around with relative ease. With virtualized clients there are also two main models, depending on whether the application execution takes place in servers in a data center or on the physical client. Beyond that we have identified at least seven distinct variants, each architected to address specific management, security and TCO needs and with usage models with specific business scenarios in mind. At least for server-based clients, their presence may be an indication of technology convergence between clients and server products in cloud space, a continuation of the trend that started when clients were used as presentation devices for traditional three-tier applications. This article examines some of the general issues and concerns regarding client virtualization... SOA http://www.soamag.com/contributors/bio-bgolden.asp#When:01.14.11 http://soamag.com/I45/1207-3.php Many users of computer technology-and for that matter, many technology creators and administrators-complain about the rapid pace of change in information technology. The most recent example of a new technology trend bursting upon the scene is cloud computing. Setting a record for going from "what is it?" to "I've got to have it," cloud computing for many people seems to represent a revolution in how computing will be done in the future. It's important; however, to understand that despite its sudden arrival, cloud computing is actually the latest manifestation of well-established trends, each of which has brought new benefits and new challenges to those working in IT. It is Crucial to understand that cloud computing signifies a movement away from IT-centric product focus and signals a re-engagement with computing users, made possible by those long-established trends. SOA http://www.soamag.com/contributors/bio-ecastro.asp#When:08.12.10 http://soamag.com/I26/0223-2.asp The concept of virtualization and sharing of resources is not new. In fact, the idea of standardization has been around since the industrial revolution made it possible to mass produce identical parts. Because of this, manufacturing and production costs declined steeply, as businesses no longer needed to specialize in every aspect of production. And now, the same idea is being applied in the information age. Virtualization and service-orientation are allowing businesses to share or sell common components to allow for faster and cheaper development times. SOA http://www.soamag.com/contributors/bio-ecastro.asp#When:22.02.09 http://www.soamag.com/I22/0908-2.asp One of the primary goals of service-orientation is to attain a structural cost reduction in the delivery of IT services through reuse and standardization. The transition from a traditional system to a service-oriented system requires breaking monolithic applications into standard services. In keeping with this approach, many services can become outsourced, which in turn may lead to lower operating costs but at the expense of downsizing. In this article we will explore structural economic changes brought upon by service-orientation and we will highlight how the emerging services marketplace will make SOA in general more accessible to small-to-medium sized organizations. SOA http://www.soamag.com/contributors/bio-ecastro.asp#When:22.09.08