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Blended education for systems architecting evaluation of the initial blended course version
If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you! Published by Isaac Carr Modified 10 months ago. Architectural Design Principles. Architectural Design Establishing the overall structure of a software system Objectives To introduce architectural design and to discuss its importance. Introduction to Software Design Chapter 1. Similar presentations. Upload Log in. My presentations Profile Feedback Log out. Log in. Auth with social network: Registration Forgot your password?
The architecting process is described using a set of goals that are specific to architecting, and the associated specific practices that enable the realization of these goals. Keywords: architecting process, network-centric system architecting, process area, software architecting, software architecture, software-based system architecting, system architecting, system of systems architecting.
One reason behind this shift is the need to reach beyond tightly-coupled environments to access data and functionality that reside on remote systems deployed on different platforms, and which are possibly owned and managed by different entities. Instead, software-based solutions are provided as services over a network, and users access these services through a plethora of network-capable devices that range from mainframe computers to smart phones.
Under the SaaS paradigm, architecting has become a distinct and essential life cycle process for software engineering as well as system engineering.
Today, architecting is well-recognized in practice as evidenced by job titles such as Software Architect, Solution Architect, Enterprise Architect, Application Architect, Integration Architect, and Information Architect. In addition, several programs exist to confer professional certification and certificates to architecture practitioners. Most of such programs are organizationally-based promoting individuals along the organization ladder, and are typically focused on in-house technologies and products. Other programs exist to grant professional architecture certification to practitioners who are interested in going through the certification process.
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On the one hand, the architecting discipline has moved from mere qualitative observations of the structure of working systems into a rich repertoire of concepts, methods, standards, frameworks, and tools to create, document, analyze, and assess architecture specifications. This indispensability makes it vital for software-based solution providers to execute best architecting practices in order to deliver quality solutions. Processes are important to streamlining the work required to develop a software-based solution from inception through operation and to retirement.
Solution providers typically focus on three dimensions of their development approaches: people, methods, and tools [SEI ]. However, published life cycle models leave out architecting from their processes. A process area is a set of specific practices that achieve a set of specific goals for making improvement in that area.
A specific goal of a process area is a distinctive objective that must be met in order to satisfy that area.
Systems architecting of organizations : why eagles can't swim in SearchWorks catalog
A specific practice is an activity that must be carried out to achieve part or all of a corresponding specific goal. However, CMMI also leaves out architecting as one of its 22 defined process areas. Although CMMI helps organizations identify process areas crucial to developing quality products and provides a framework to improve such processes, architecture is briefly discussed as part of a Specific Practice SP 2. Evidently, architecting requires more prominence in the life cycle than what it currently has in the CMMI models [Valerdi et al.
We advocate that architecting should have its own process area. The purpose of this paper is to provide a structured description of the process of architecting software-based network- centric system of systems. We propose that such a description of the architecting process be added as a CMMI process area at Level 3. However, for the purposes of this paper we only emphasize the specific goals and specific practices of the architecting process area. The remainder of this paper is organized as follows. Section 2 presents an overview of the architecting process area.
The specific goals and practices of the architecting process are described in Section 3. Finally, concluding remarks are provided in Section 4. Engineering process areas are processes that span the entire development life cycle of a system from its inception to retirement.
Systems Architecting: A Business Perspective
Maturity Level 3 process areas are established processes within the organization and are executed in a proactive manner. The purpose, activities, and performers of the architecting process, as well as the uses of architecture specification are described below. The process of architecting takes the Problem Specification and Requirements Specification as input and produces an Architecture Specification as an output work product.
The development of an architecture specification focuses on several objectives. The primary objective is to ensure that system quality attributes i. Moreover, the development of an architecture specification focuses on ensuring that the produced architecture is represented from different perspectives to facilitate communication among various stakeholders. An architecture specification describes the fundamental organization of components, the relationships among these components, the mapping of these components to their environment, and the principles and guidelines governing the system design and evolution [IEEE ].
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The architecting process typically follows a systems perspective [Kossiakoff and Sweet ]. It looks at the system as a whole. Externally, the architecting process takes into account interfacing systems, the operating environment, and the users of the system.
Internally, it focuses on the architectural arrangements that represent the system. Therefore, the architecture specification must include software, hardware, and human when appropriate components. The roles and job titles of architecting practitioners vary by organization and domain. In this case, there is often a lead architect who manages the team. Equally important, architecture specifications are used as means of communication between the architect and the stakeholders, and among stakeholders.
Therefore, architecture specification is produced from multiple perspectives viewpoints to enable such communication since stakeholders often have disparate stakes in the architecture. CMMI-DEV defines a process area by identifying the specific goals of that area and the associated specific practices that enable the realization of those goals. Each SG and SP is described below. The architecting process starts with identifying the software, hardware, and human e.
Human components may or may not be relevant parts of the architecture depending on the context of the system. These components should be identified so as to satisfy the requirements and provide the mandated capabilities.
To achieve this goal, the following specific practices are employed. Before identifying the components that will make up the system architecture, the requirements that are germane to the architecture should be identified. Architecturally-relevant requirements are those that have far-reaching implications on the architecture and span more than one component of the system. Architecturally-relevant requirements include the functional requirements that describe major capabilities of the system — capabilities without which the system cannot satisfy the purposes intended for its use.
Such requirements are important to identify system components and the relationships among them.
Architecturally-relevant requirements also include non-functional requirements also referred to as quality characteristics or attributes such as dependability, interoperability, and performance. Such quality characteristics are germane to the architecting process because they affect the quality of the entire system. Quality attributes often tradeoff. For instance, enhancing security by adding extra layers of authentication and data encryption introduces a communication overhead and therefore affects the performance negatively.
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