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Every major enterprise has a significant installed base of existing software systems that reflect the tangled IT architectures that result from decades of patches and failed replacements. Most of these systems were designed to support business architectures that have changed dramatically. At best, these systems hinder agility and competitiveness and, at worst, can bring critical business functions to a halt.
Architecture-Driven Modernization (ADM) restores the value of entrenched systems by capturing and retooling various aspects of existing application environments, allowing old infrastructures to deliver renewed value and align effectively with enterprise strategies and business architectures.
This book provides a practical guide to organizations seeking ways to understand and leverage existing systems as part of their information management strategies. It includes an introduction to ADM disciplines, tools, and standards as well as a series of scenarios outlining how ADM is applied to various initiatives. Drawing upon lessons learned from real modernization projects, it distills the theory and explains principles, processes, and best practices for every industry.
* Acts as a one-stop shopping reference and complete guide for implementing various modernization models in myriad industries and departments.
* Every concept is illustrated with real-life examples from various modernization projects, allowing you to immediately apply tested solutions and see results.
* Authored by the Co-chair of the Object Management Group (OMG) Architecture-Driven Modernization (ADM) Task Force, which sets definitive systems modernization standards for the entire IT industry.
* A web site supports the book with up to date coverage of evolving ADM Specifications, Tutorials, and Whitepapers, allowing you to remain up to date on modernization topics as they develop.
- Sales Rank: #812846 in eBooks
- Published on: 2010-02-04
- Released on: 2010-02-04
- Format: Kindle eBook
Review
"If your enterprise is like most others, you probably have some trusted old systems that have served well but have become problematic for one reason or another. Perhaps the platform is no longer supported, or growth and add-ons have evolved into an expensive and difficult-to-maintain application mess. Information Systems Transformation: Architecture-Driven Modernization Case Studies, a book by William Ulrich and Philip H. Newcomb, offers some relief... Overall, the book provides a crash course on architecture-driven modernization, what to do, and, just as important, what not to do. Anyone who is contemplating a modernization project should start by reading this book." ����������������������������������� Mike Rosen, Director, Cutter Consortium Enterprise Architecture Practice
From the Back Cover
Every major enterprise has a significant installed base of existing software systems that reflect the tangled IT architectures that result from decades of patches and failed replacements. Most of these systems were designed to support business architectures that have changed dramatically. At best, these systems hinder agility and competitiveness and, at worst, can bring critical business functions to a halt.
Architecture-Driven Modernization (ADM) restores the value of entrenched systems by capturing and retooling various aspects of existing application environments, allowing old infrastructures to deliver renewed value and align effectively with enterprise strategies and business architectures.
This book provides a practical guide to organizations seeking ways to understand and leverage existing systems as part of their information management strategies. It includes an introduction to ADM disciplines, tools, and standards as well as a series of scenarios outlining how ADM is applied to various initiatives. Drawing upon lessons learned from real modernization projects, it distills the theory and explains principles, processes, and best practices for every industry.
About the Author
Philip Newcob is CEO of The Software Revolution, Incorporated (TSRI), and an internationally recognized expert in the application of artificial intelligence and formal methods to software engineering. Over the course of 32 years, he has done groundbreaking research in the application of artificial intelligence, software engineering, automatic programming, and formal methods technology to industrial software problems, including 13 years at the Boeing Artificial Intelligence Center as a Principal Computer Scientist before founding TSRI in 1995. Mr. Newcomb formulated the conceptual product framework and led a team of computer scientists to develop the software transformation technology and products offered by TSRI.
Most helpful customer reviews
4 of 5 people found the following review helpful.
Systems modernization scenarios, tasks, and case studies
By Erik Gfesser
Since the marketplace is largely absent of texts discussing the modernization of software systems architecture, this reviewer did not know what to expect from authors William M. Ulrich and Philip H. Newcomb. In addition, the space of this topic can be very large depending on how it is defined. In the opinion of this reviewer, the best part of what the authors present are the ten case studies, which comprise the bulk of the content, but the initial chapters and concluding chapter provide some initial high-level guidance for managers looking to pursue modernization projects for the first time.
While the case studies presented here offer a variety of scenarios, the potential reader should note that there are some commonalities across these scenarios as well. The tooling and processes utilized across these case studies are shared to a large extent, although there is definitely variation depending on the systems and firms involved. Newcomb is CEO of The Software Revolution, Incorporated (TSRI), and so some of the commonality is due to the tooling and services provided by his firm, for example. The variation provided is largely due to type of system, associated technologies, and modernization approach.
During their initial discussion of challenges facing most enterprises today, the authors note that there is "a lack of understanding by executive teams regarding the impact of these issues and the actions that can be taken to address them for the betterment of the business environment" and that "it is of great concern that software and data assets are largely a mystery to management and planning teams". In following up this discussion with salvaging or rehabilitating legacy systems to provide business value, the authors offer "architecture-driven modernization".
Architecture-driven modernization is defined by the authors as "a collective set of tool-enabled disciplines that facilitate the analysis, refactoring and transformation of existing software assets to support a wide variety of business and IT-driven scenarios". Ulrich later discusses "the four corners of modernization", which consist of modernization scenarios, modernization tasks and disciplines, modernization technologies, and modernization standards, and argues that scenarios form the basis for modernization roadmaps.
Common modernization scenarios include IT portfolio management, replacement/rewrite, COTS package deployment, architecture consolidation, Model-Driven Architecture (MDA) migration, SOA transformation, data architecture migration, user interface refactoring, application improvement, language/source artifact transliteration and platform migration, and data conversion. Ulrich argues that management should be creative and look at a mix-and-match approach that addresses their requirements, and as a consultant who has been a participant in several such endeavors, this review wholeheartedly agrees with this assessment.
As an architect, this reviewer especially enjoyed the following case studies: "Modernization of the Eurocat Air Traffic Management System (EATMS)", "PowerBuilder/4GL Generator Modernization Pilot", and "Veterans Health Administration's VistA MUMPS Modernization Pilot". Note that each of the ten case studies was written by a different set of authors, so the subject concentration and writing style differ greatly between each. Diagram and table effectiveness also varies considerably, and it is no accident that apart from the subject matter of the three case studies sited, these case studies also excel in these areas.
The first of these three spends considerable time discussing all of the steps performed during transformation of Ada 83 code into C++ and Java (the Java solution won). concentrating on performance and duplication of the exact functionality provided in the original system. In contrast to low-level detail, the second of these three concentrates at the high-level, providing a high number of relevant architecture diagrams (to which this reviewer is partial). This reviewer enjoyed the third of these case studies from a business domain perspective, since it concentrates on health care system modernization.
While no book can offer detailed advice specific to the challenges a given potential reader might face in this space, in the opinion of this reviewer the authors offer solid introductory advice on how to start tackling a modernization project, and provide a wide enough variety of case studies that readers can get a feel for what they might encounter in pursuit of such a project. The discussions that the authors provide here definitely delve into the technical, but it is perhaps managers that will benefit the most from a reading of this book, especially the sections that discuss assessments and scenarios and issues underlying traditional approaches such as greenfield replacement and use of COTS software.
4 of 5 people found the following review helpful.
Alternate Approach for Massive, Aging, Business Critical Software
By E. Griffin
Information Systems Transformation: Architecture-Driven Modernization Case Studies addresses the challenge of monolithic and aging, yet business critical software systems. The book focuses on modernizing the application and data architectures of these massive and fragile systems as an alternative to the common approaches of re-writing, replacing with packaged software, or wrapping in middleware.
Part one explains architecture-driven modernization, its potential value over other approaches, creating a strategy, standards, and roadmap, along with the use of scenario creation. The second portion of book consists of ten in-depth case studies, spanning a range of technologies and organization types. The final chapter is a brief synopsis of initiating and sustaining modernization initiatives.
The audience for Information Systems Transformation: Architecture-Driven Modernization Case Studies is technology architects, application developers, system engineers and others with a strong interest in addressing the challenge of legacy systems. The first two parts of the book, especially the case studies, are very good, providing comprehensive information illustrated with charts and tables. The final chapter is very brief, containing superficial information about the reality of implementing modernization.
This book is recommended for anyone deeply interested in the topic, and system architects, while practitioners will want to supplement with additional reading about successful technology initiatives and centers of excellence.
0 of 0 people found the following review helpful.
A solid intro to architecture driven modernization
By John W. Graham
As the authors postulate, many enterprises maintain legacy software systems which are patched and updated when problems or new requirements arise. Business architectures, strategic visions, core product lines and structures evolve at a rapid pace. Without a modernization approach, stagnation if often imminent.
This book is divided into three parts. The first part defines and introduces architecture-driven modernization. The second part provides a series of ten case studies. The third part discusses pitfalls.
Although I am employed as a systems engineer and tasked primarily with maintaining large software systems, I have had experience similar to the Chapter 11 case study on model driven reverse engineering of a COBOL based application. In my case, I was faced with updating a DOS based database system written in Dataflex to meet new and emerging customer requirements on a different operating system. I attempted to use MDD, or model driven development, in the reverse engineering process. Just like their COBOL case, I was faced with code written in the 80's and early 90's, so there was a high degree of code and functional redundancy. As the author's documented, I also ended up with a reproduction of the existing system in another environment, and found the use of MDA less practical in practice as it sounds in theory. The main takeaway is that MDA is used to separate the design from the architecture and MDD is a method of rapidly determining a solution from abstracted models.
Overall, the authors do a thorough job of introducing the reader to architecture driven modernization. I hope this book makes it into the "right" hands because there are a lot of "drive by architects" out there that tout architecture driven approaches as the panacea to all modernization challenges. My point is, read this book and add its information to your arsenal. At a minimum, it provides a good starting point for your own modernization challenges.
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