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Agile Software Architecture

Agile Software Architecture Book
Author : Muhammad Ali Babar,Alan W. Brown,Ivan Mistrik
Publisher : Newnes
Release : 2013-11-27
ISBN : 0124078850
Language : En, Es, Fr & De

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Book Description :

Agile software development approaches have had significant impact on industrial software development practices. Today, agile software development has penetrated to most IT companies across the globe, with an intention to increase quality, productivity, and profitability. Comprehensive knowledge is needed to understand the architectural challenges involved in adopting and using agile approaches and industrial practices to deal with the development of large, architecturally challenging systems in an agile way. Agile Software Architecture focuses on gaps in the requirements of applying architecture-centric approaches and principles of agile software development and demystifies the agile architecture paradox. Readers will learn how agile and architectural cultures can co-exist and support each other according to the context. Moreover, this book will also provide useful leads for future research in architecture and agile to bridge such gaps by developing appropriate approaches that incorporate architecturally sound practices in agile methods. Presents a consolidated view of the state-of-art and state-of-practice as well as the newest research findings Identifies gaps in the requirements of applying architecture-centric approaches and principles of agile software development and demystifies the agile architecture paradox Explains whether or not and how agile and architectural cultures can co-exist and support each other depending upon the context Provides useful leads for future research in both architecture and agile to bridge such gaps by developing appropriate approaches, which incorporate architecturally sound practices in agile methods

Becoming an Agile Software Architect

Becoming an Agile Software Architect Book
Author : Rajesh R V
Publisher : Packt Publishing Ltd
Release : 2021-03-19
ISBN : 1800568207
Language : En, Es, Fr & De

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Book Description :

A guide to successfully operating in a lean-agile organization for solutions architects and enterprise architects Key Features Develop the right combination of processes and technical excellence to address architectural challenges Explore a range of architectural techniques to modernize legacy systems Discover how to design and continuously improve well-architected sustainable software Book Description Many organizations have embraced Agile methodologies to transform their ability to rapidly respond to constantly changing customer demands. However, in this melee, many enterprises often neglect to invest in architects by presuming architecture is not an intrinsic element of Agile software development. Since the role of an architect is not pre-defined in Agile, many organizations struggle to position architects, often resulting in friction with other roles or a failure to provide a clear learning path for architects to be productive. This book guides architects and organizations through new Agile ways of incrementally developing the architecture for delivering an uninterrupted, continuous flow of values that meets customer needs. You'll explore various aspects of Agile architecture and how it differs from traditional architecture. The book later covers Agile architects' responsibilities and how architects can add significant value by positioning themselves appropriately in the Agile flow of work. Through examples, you'll also learn concepts such as architectural decision backlog,the last responsible moment, value delivery, architecting for change, DevOps, and evolutionary collaboration. By the end of this Agile book, you'll be able to operate as an architect in Agile development initiatives and successfully architect reliable software systems. What you will learn Acquire clarity on the duties of architects in Agile development Understand architectural styles such as domain-driven design and microservices Identify the pitfalls of traditional architecture and learn how to develop solutions Understand the principles of value and data-driven architecture Discover DevOps and continuous delivery from an architect's perspective Adopt Lean-Agile documentation and governance Develop a set of personal and interpersonal qualities Find out how to lead the transformation to achieve organization-wide agility Who this book is for This agile study guide is for architects currently working on agile development projects or aspiring to work on agile software delivery, irrespective of the methodology they are using. You will also find this book useful if you're a senior developer or a budding architect looking to understand an agile architect's role by embracing agile architecture strategies and a lean-agile mindset. To understand the concepts covered in this book easily, you need to have prior knowledge of basic agile development practices.

Agile Software Architecture

Agile Software Architecture Book
Author : Matthias Galster,Paris Avgeriou
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070269
Language : En, Es, Fr & De

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Book Description :

Variability facilitates the design of software products that can be adapted for a wide range of customers or contexts. In agile development, software products begin to be built before the desired product is fully understood. Both variability and agile development embrace change and adaptation. This chapter combines the agile paradigm and variability to achieve adaptable software architectures and shows how the agile paradigm and the concept of variability can complement each other in an approach to variability handling at the software architecture level.

Agile Software Architecture

Agile Software Architecture Book
Author : Muhammad Ali Babar
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070218
Language : En, Es, Fr & De

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Book Description :

Software architecture (SA) is one of the most significant areas of research and practice in software engineering. It has been shown that getting architecture of large-scale complex systems right is not only extremely important but hugely challenging. The increasing popularity and adoption of Agile Software Development (ASD) methods have brought architecture-centric methods and practices into question as agile followers tend to perceive architecture in the context of plan-driven software development. It is widely recognized that SA needs sufficient attention for successful development and evolution of software-intensive systems and services irrespective of the software development paradigm. Given the nature of the discipline, SA methods and approaches tend to be effort-intensive and heavyweight for certain kinds of projects. There is an increasing interest in finding ways to apply architecture-centric principles and practices in an Agile fashion—Agile architecting. A good understanding of architectural principles and approaches is a prerequisite to agile architecting. The aim of this chapter is to briefly describe the fundamental concepts, principles, and practices of architecture-centric approaches. These concepts, principles, and practices are expected to provide a reader with sufficient understanding of different aspects of SA and its related methods to combine them with ASD methods. We start with a brief discussion of the points that make architecture and agile approaches seemingly incompatible. Then we present and discuss some of the key aspects of architecture-centric approaches and techniques that need to be considered for use in ASD projects. We also provide an overview of some of the key practices that have been recommended for successfully integrating architecture-centric approaches in ASD for developing large-scale, software-intensive systems.

Agile Software Architecture

Agile Software Architecture Book
Author : Veli-Pekka Eloranta,Kai Koskimies
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070285
Language : En, Es, Fr & De

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Book Description :

Architecture knowledge management (AKM) aims to codify and maintain the architectural knowledge of a software system in a form that can be easily accessed by different stakeholders. Integrating AKM with an agile project management paradigm is a challenge because the agile philosophy downplays both plan-driven development and documentation. Yet, by integrating lightweight AKM practices with the process, agile software development could avoid maintenance and communication problems arising from scarce documentation. In this chapter, we introduce existing technologies that could be used as elements of lightweight AKM for agile software development and present possible models to integrate AKM with Scrum, which is the most popular agile approach in use today. In particular, we advocate the exploitation of architectural evaluations to collect architecturally significant information semiautomatically and the use of automated document generation to expose the contents of an architectural information repository in an easily accessible form. The proposed models are based on observed architecting work practices in industry and on interviews carried out in industry to identify the architectural information flow in real-life agile projects.

Agile Software Architecture

Agile Software Architecture Book
Author : Michael Stal
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070234
Language : En, Es, Fr & De

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Book Description :

This chapter describes how to systematically prevent software architecture erosion by applying refactoring techniques. Software architecture modifications are common rather than the exception in software development. Modifications come in different flavors, such as redefining or adding requirements, changing infrastructure and technology, or causing changes by bugs and incorrect decisions. But no matter where these changes originate, they need special attention from software architects. Otherwise, if software architects merely focus on adding new features—(changes or extensions that by themselves might not be adequate), design erosion will be the final result. In a systematic approach, software architects evaluate the existing software design before adding new artifacts or changing existing ones. Whenever they identify architecture problems, they immediately resolve architectural issues, thus assuring high quality and sustainability. Software architecture refactoring enables such iterative architecture improvement. It consists of indentifying problems, applying the right refactorings, and testing the results. Architecture refactoring is often combined with code refactoring activities to add the best value. Refactoring patterns offer proven solutions for recurring architectural problems, hence providing a toolset to software engineers.

Agile Software Architecture

Agile Software Architecture Book
Author : Ben Isotta-Riches,Janet Randell
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070358
Language : En, Es, Fr & De

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Book Description :

Large enterprise organizations are increasingly turning to the use of agile approaches for their information technology (IT) development and are encountering a range of challenges that were not faced by the early, usually smaller, agile adopters. Enterprise-scale organizations frequently have complex organizational structures and complex IT estates, including a mix of legacy and modern applications. Both of these attributes have a negative impact on the ease with which agile principles and practices can be applied. This chapter describes the experiences of Aviva UK during our early agile transformation journey. We describe the challenges that we faced, focusing particularly on those relating to our IT architecture, and we discuss the three architecture strategies that we put in place to drive success: These strategies have been developed based on both our own experience and the input and experience of agile consultants .We believe that they will be key drivers for success in any large corporate organization with an IT estate that includes both legacy and modern applications.

Agile Software Architecture

Agile Software Architecture Book
Author : Jennifer Pérez,Jessica Díaz,Juan Garbajosa,Agustín Yagüe
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070293
Language : En, Es, Fr & De

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Book Description :

Agile architecting is a key issue to scale agile to develop large software systems. This chapter describes a set of mechanisms that make agile architecting feasible. These mechanisms are smoothly integrated in a tailored Scrum for agile architecting by (1) defining product requirements in terms of features by using feature pools and feature trees to provide the portfolio and roadmap visions of a product, (2) designing highly flexible architecture called working architecture, (3) bridging user stories and software architecture through features and design decisions as traceability mechanisms, and (4) systematically assisting agile practitioners by conducting change impact analysis of features through various iterations of the agile process. This tailored Scrum for agile architecting has been successfully put into practice to develop several projects, which have been deployed in a software factory set up in collaboration between the Technical University of Madrid (UPM) and the company Indra. In this chapter, one of these projects is used to illustrate how this tailored Scrum has been applied and how it can be adopted.

Agile Software Architecture

Agile Software Architecture Book
Author : Peter Eeles
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070331
Language : En, Es, Fr & De

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Book Description :

Organizations must adapt to survive, and their ability to change and innovate is driven by two key enablers - architecture and agile. Based on practical experiences of working with several clients adopting both architecture and agile practices, the author sheds light on those factors that resulted in successful transformations and the creation of a platform for innovation. The author concludes that architecture and agile practices are complementary and that their successful introduction within an organization is not just technical in nature, but also requires a focus on people and appropriate techniques for managing organizational change.

Agile Software Architecture

Agile Software Architecture Book
Author : Georg Buchgeher,Rainer Weinreich
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070277
Language : En, Es, Fr & De

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Book Description :

This chapter discusses software architecture analysis in the context of agile processes. Agile processes are characterized by incremental and interleaved activities and by a focus on continuous improvement and delivery. Most approaches to software architecture analysis, however, have been developed to be performed at dedicated points in the development process or as external evaluation activities and not as continuous activities throughout the development process. This chapter discusses continuous software architecture analysis (CSAA). It reviews important requirements for CSAA and outlines how CSAA is supported by current software architecture analysis approaches. It further presents experiences with an approach for continuous structural and conformance analysis and identifies future research challenges.

Agile Software Architecture

Agile Software Architecture Book
Author : Richard Hopkins,Stephen Harcombe
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070323
Language : En, Es, Fr & De

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Book Description :

This chapter looks at the delivery of large, complex system development projects that typically require the development and integration of multiple systems and the coordination of hundreds of individuals. We argue that traditional agile development techniques that persuade against the use of architectures and processes can fail or provide suboptimal delivery in such situations. It is argued that elements of software, infrastructure, and data architecture are necessary prerequisites for the successful delivery of complex agile system development projects. The chapter suggests that these architectural elements should be identified in each project via a risk-based approach. These resulting architecture elements can then be used by a distributed low-cost delivery organization to reduce rework within the agile software development process and accelerate delivery by maximizing the overall delivery pipeline. The chapter argues that this agile architecting technique successfully enables the low-cost and low-risk delivery of complex agile system development projects.

Agile Software Architecture

Agile Software Architecture Book
Author : Jan Salvador van der Ven,Jan Bosch
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070250
Language : En, Es, Fr & De

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Book Description :

The way in which architectural decisions are made changes when more agile development methods are used. This chapter focuses on architectural decisions and how they are made in industrial settings. From our literature research and experience, we have constructed three axes on which the architectural decision process of projects or companies can be projected. We evaluate this framework with five industrial case studies in which we have participated. In all of the cases, the differences between two points in time (phases) were evaluated. These differences helped us identify what aspects influence the efficiency of the project/company. The presented Triple-A Framework can be used in other projects to help locate places where the architectural process can be improved when the agility of a project changes.

Relating System Quality and Software Architecture

Relating System Quality and Software Architecture Book
Author : Ivan Mistrik,Rami Bahsoon,Peter Eeles,Roshanak Roshandel,Michael Stal
Publisher : Morgan Kaufmann
Release : 2014-07-30
ISBN : 0124171680
Language : En, Es, Fr & De

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Book Description :

System Quality and Software Architecture collects state-of-the-art knowledge on how to intertwine software quality requirements with software architecture and how quality attributes are exhibited by the architecture of the system. Contributions from leading researchers and industry evangelists detail the techniques required to achieve quality management in software architecting, and the best way to apply these techniques effectively in various application domains (especially in cloud, mobile and ultra-large-scale/internet-scale architecture) Taken together, these approaches show how to assess the value of total quality management in a software development process, with an emphasis on architecture. The book explains how to improve system quality with focus on attributes such as usability, maintainability, flexibility, reliability, reusability, agility, interoperability, performance, and more. It discusses the importance of clear requirements, describes patterns and tradeoffs that can influence quality, and metrics for quality assessment and overall system analysis. The last section of the book leverages practical experience and evidence to look ahead at the challenges faced by organizations in capturing and realizing quality requirements, and explores the basis of future work in this area. Explains how design decisions and method selection influence overall system quality, and lessons learned from theories and frameworks on architectural quality Shows how to align enterprise, system, and software architecture for total quality Includes case studies, experiments, empirical validation, and systematic comparisons with other approaches already in practice.

Agile Software Architecture

Agile Software Architecture Book
Author : Antonio Rico,Manuel Noguera,José Luis Garrido,Kawtar Benghazi,Lawrence Chung
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070315
Language : En, Es, Fr & De

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Book Description :

Running a dedicated instance of a software application can be burdensome to a customer if it involves a large amount of memory and processing overhead or a licensing fee or if the customer is a small company. Multitenancy (MT) architectures (MTAs) allow for multiple customers (i.e., tenants) to be consolidated into the same operational system, hence reducing the overhead via amortization over several customers. Lately, MTAs are drawing increasing attention because MT is regarded as an essential attribute of cloud computing and its new software delivery model, Software as a Service. In a moment of debate about the coexistence between architecture and agility, we introduce in this chapter a multitenancy, multitarget architecture (MT2A). MT2As are an evolution of traditional MTAs that reduce the various overhead by providing multiple services instead of a single service. In MT2As, there are new components added to the corresponding MTAs to manage the (now possibly) multiple services. MT2A is intended to support traditional agile development, as well as rapid deployment, by enabling the reuse of common components of the architecture. In this chapter, we also present an implementation of the architecture through an MT2 system called Globalgest.

Lean Architecture

Lean Architecture Book
Author : James O. Coplien,Gertrud Bjørnvig
Publisher : John Wiley & Sons
Release : 2011-01-06
ISBN : 0470970138
Language : En, Es, Fr & De

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Book Description :

More and more Agile projects are seeking architectural roots as they struggle with complexity and scale - and they're seeking lightweight ways to do it Still seeking? In this book the authors help you to find your own path Taking cues from Lean development, they can help steer your project toward practices with longstanding track records Up-front architecture? Sure. You can deliver an architecture as code that compiles and that concretely guides development without bogging it down in a mass of documents and guesses about the implementation Documentation? Even a whiteboard diagram, or a CRC card, is documentation: the goal isn't to avoid documentation, but to document just the right things in just the right amount Process? This all works within the frameworks of Scrum, XP, and other Agile approaches

Agile Software Architecture

Agile Software Architecture Book
Author : James O. Coplien,Trygve Reenskaug
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070226
Language : En, Es, Fr & De

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Book Description :

We find surprisingly strong parallels in a playful comparison of the progression of thought in the architecture of the built world and its namesake in software. While some architectural progression in both fields owes to fashion, much more of it owes to learning—in both the field of design and collective human endeavor. We have been working on a paradigm called DCI (Data, Context, and Interaction) that places the human experiences of design and use of programs equally at center stage. It brings software design out of the technology-laced modern school of the 1980s into a postmodern era that places human experience at the center. DCI offers a vision of computers and people being mutually alive in the sense of Christopher Alexander’s great design. DCI opens a dialog contrasting metaphors of collective human reasoning and Kay’s vision of object computation, as well as a dialog between the schools of design in the built world and in software.

Agile Software Architecture

Agile Software Architecture Book
Author : Uwe Friedrichsen
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 012807034X
Language : En, Es, Fr & De

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Book Description :

Many discussions in the agile community circle around emergent architecture. The idea is that explicit architectural work is not needed anymore besides an initial architectural vision. Instead, the architecture would emerge from a cycle of implementation and refactoring guided by a few design principles, and this approach would automatically lead to the smallest architecture possible. This chapter shows that this proposition is only partially correct. Starting with the activities and objectives of architectural work, it shows that emergent architecture is providing a valuable alternative to conventional architecture approaches in some areas of architectural work, whereas it does not support other areas at all. On the basis of these findings, a joint approach for architectural work in an agile setting is presented.

Aligning Enterprise System and Software Architectures

Aligning Enterprise  System  and Software Architectures Book
Author : Mistrik, Ivan
Publisher : IGI Global
Release : 2012-10-31
ISBN : 1466622008
Language : En, Es, Fr & De

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Book Description :

"This book covers both theoretical approaches and practical solutions in the processes for aligning enterprise, systems, and software architectures"--Provided by publisher.

Just Enough Software Architecture

Just Enough Software Architecture Book
Author : George Fairbanks
Publisher : Marshall & Brainerd
Release : 2010
ISBN : 0984618104
Language : En, Es, Fr & De

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Book Description :

This practical guide seeks to make architecture relevant to all software developers. Developers need to understand how to use constraints as guiderails that ensure desired outcomes, and how seemingly small changes can affect a system's properties.

Agile Software Architecture

Agile Software Architecture Book
Author : Sarah Al-Azzani,Ahmad Al-Natour,Rami Bahsoon
Publisher : Elsevier Inc. Chapters
Release : 2013-11-27
ISBN : 0128070307
Language : En, Es, Fr & De

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Book Description :

Verifying the security posture as a system evolves is indispensable for building deployable software systems. Traditional security testing lacks flexibility in (1) providing early feedback to the architect on the ability of the software to predict security threats so that changes are made before the system is built, (2) responding to changes in user and behavior requirements that could affect the security of software, and (3) offering real design fixes that do not merely hide the symptoms of the problem (i.e., patching). We motivate the need for an architecture-level testing for security grounded on incremental and continuous refinements to support agile principles. We use architecture as an artifact for initiating the testing process for security through subsequent and iterative refinements. We extend the use of implied scenario to reveal undesirable behavior caused by ambiguities in users’ requirements and we analyze detection their security implications. This approach demonstrates how architecture-centric evaluation and analysis can assist in securing systems developed using an agile development cycle. We apply this approach to a case study to evaluate the security of identity management architectures. We reflect on the effectiveness of this approach in detecting vulnerable behaviors and the cost-effectiveness of refining the architecture before vulnerabilities are built into the system.