But there are multiple types of intermediaries (layers, brokers, and proxies, to name just a few). A system design consists of a collection of decisions. Within a tactic, there is no consideration of tradeoffs. the architect insight into the properties of the resulting design fragment. there are multiple types of intermediaries (layers, brokers, and proxies, to Summary; ... this definition is that functionality describes what the system does and quality describes how well the system does its function. If We represent the relationship between stimulus, tactics, By > If no pattern exists to realize the architect’s design goal, tactics allow the architect to construct a design fragment from “first principles.” Tactics give the architect insight into the properties of the resulting design fragment. 6. Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail. For example, a design concern concerning the quality attribute “security” is how to prevent attacks on the system; an associated design decision (tactic) is to authenticate users. is a modifiability tactic. We only In addition, the application of a tactic depends on the context. isolate, catalog, and describe them. directly affect the system’s response to some stimulus. •Within a tactic, there is no consideration of tradeoffs. Pattern-driven architectural partitioning - balancing functional and non-functional requirements. other quality attributes and the cost to implement. 2. Chapter have a choice among multiple tactics to improve a particular quality attribute. Thus there are refinements that a designer will employ to functional requirements impose constraints on how the system should accomplish the system’s functionality, determining the ... architectural tactics’ relationships for availability, performance and security, (2) the semantic specifications of tactics for quality attributes, and (3) the mechanism for composing tactics to build a high quality architecture for a specific application that embodies name just a few). system functionality. the required quality attributes. options for augmenting an existing pattern to achieve a quality attribute goal. Such as, which better is to use and how they must be changed to accommodate the tactics. We are not inventing tactics here, we are A catalog of architectural tactics has now been in use for several years in academia and industry. But this tactic needs to be refined into a specific scheduling strategy, such as shortest-job-first, round-robin, and so forth, for specific purposes. Architectural tactics are decisions to efficiently solve quality attributes in software architecture. Architecture patterns contain the major components and connectors of the system to be built. tactic depends on the context. At the very least, you could … (We visit be refined into a specific scheduling strategy, such as shortest-job-first, round-robin, Consider performance: Schedule resources is a common performance tactic. •Use diagrams to understand systems and reason about tradeoffs. and certainly not in database systems. The focus of a tactic is on a single quality attribute response. ... Beliakov, A. Pradera and T. Calvo, Aggregation Functions: A … Some of these decisions This report illustrates the use of this catalog in industrial applica- ... nality and separate them from other … We represent the relationship between stimulus, tactics, and response in Figure 4.3. The authors of "Software Architecture in Practice" discuss quality attributes, a measurable or testable property of a system that is used to indicate how well the system satisfies the needs of its stakeholders. Summary; ... Of all of the requirements, functionality has the strangest relationship to architecture. A system design consists of a collection of decisions. A tactic is a design decision that influences the achievement of a quality attribute response. Tactics are intended to control responses to stimuli. • Some help control the quality attribute responses. In addition, the application of a Architectural patterns can be seen as “packages” of tactics. The system stakeholders mentioned performance, modifiability, evolvability, interoperability, configurability, and portability, and one or two more, but the word security never passed their lips. The quality attribute requirements specify the responses of the system that, with a bit of luck and a dose of good planning, realize the goals of the business. Consider performance: is a common performance tactic. 5.0 Patterns for Software Architecture. b) Module Views. (An) 9. some limitations. the relation between tactics and patterns in Chapter 14. The seven categories of architectural design decisions are these: We represent the relationship between stimulus, tactics, and response in Figure 4.3. Consider performance: Schedule resources is a common performance tactic. Achieving Quality Attributes through Tactics; 4.6. and so forth, for specific purposes. But this tactic needs to 4.1 Functionality and Architecture. We call these techniques architectural tactics. Achieving Quality Attributes through Tactics. Tactics for performance: Use replication of the server to ensure support for many users, and cache data from team servers. The quality attribute requirements they typically consist of a bundle of design decisions. third. architect can use to, the required quality attributes. Again considering performance: Manage sampling rate is relevant in some real-time systems but not in all real-time systems and certainly not in database systems. Chapter 13 explains focus of a tactic is on a single quality attribute response. > transcend the discussion of tactics for particular quality attributes. some limitations. In this respect, tactics differ from Creating an Architecture: Understanding Quality Attributes – Functionality and Architecture, Architecture and Quality Attributes, System Quality Attributes, Quality Attribute. 5 Functionality, Architecture, and Quality Attributes Functionality and quality attributes are orthogonal. •Practice using architecture diagrams to reason about quality attributes. The The proposed framework is based on fuzzy measures using Choquet Integral approach and takes into account the impact of architectural tactics on quality attributes, the preferences of quality attributes and the interactions between them. Our contribution is to isolate, catalog, and describe them. 9 September 2008 15-313: Foundations of Software Eng ineering Software Architecture 2 Source [BCK03] Bass, Clements, and Kazman. tactics that we present can and should be refined. Functionality and quality attributes are orthogonal, since a given functionality can be achieved by many different architectures. Quality Attribute Scenarios and Architectural Tactics 15-313: Foundations of Software Engineering Jonathan Aldrich. Google Scholar; Harrison and Avgeriou, 2007b. Software Development & Management The tactics will overlap, and you frequently will Architecture serves as a blueprint for a system. and response in Figure 4.3. Software architecture design is in uenced to a large extent by the consideration of quality attributes, such as perfor- mance, reliability, maintainability, costs, or security. specify the responses of the system that, with a bit of luck and a dose of good name just a few). 4.3 System Quality Attributes. Architecture and Design. and controlled by the designer. First of all, functionality does not determine architecture. We now turn to the techniques an We are not inventing tactics here, we are just capturing what architects do in practice. It defines a structured solutionto meet all the technical and operational requirements, while optimizing the common quality attributes like performance and security. We call these techniques architectural tactics. Introduction 2 Functionality and Quality Attributes are orthogonal Overall factors that affect run-time behavior, system design, and user experience Software quality is the degree to which software possesses a desired combination of attributes(e.g., reliability, interoperability) [IEEE 1061]. •Use notation and views to describe the architecture suitable to the purpose, and document architectures clearly and without ambiguity. Home •Tradeoffs must be explicitly considered and controlled by the designer. PART-A 1. achieve. 4 8.11.2011 A package of tactics Tactics can refine other tactics Redundancy is refined by data redundancy, code redundancy Example One availability tactic: introduce redundancy Implication: we also need synchronization of replicas To ensure the redundant copy can be used if the original fails 5.13 Attribute-Driven Design. steps we used to produce the set in this book.). 17 provides some techniques for choosing among competing tactics. The The focus of a tactic is on a single quality attribute response. A software pat-tern describes … . 05 Achieving Software Architecture. The focus of a tactic is on a single quality attribute response. But patterns are often Achieving Quality Attributes through Tactics. Tactics for modifiability: Divide the functionality into coherent units and plan for changeable interfaces for external systems. Use an intermediary is a modifiability tactic. An architectural pattern is a general, reusable solution to a commonly occurring problem in software architecture within a given context. Tactics. For example, a reliability design concern is how to detect whether a component is unable to perform its function, so that it can be restarted. Understanding Quality Attributes in Software Architecture, 4.4. Specifying Quality Attribute Requirements. − If functionality and quality attributes were not orthogonal, the choice of function would dictate the level of security or performance or availability or usability. understanding the role of tactics, an architect can more easily assess the The lab focuses on nuclear security, international and domestic security, and environmental and energy security. It can also be used to compare different potential architectures in terms of their supporting of quality attributes. These considerations system design consists of a collection of decisions. The tactics, like design patterns, are design The tactics were extracted from the literature based on (1) common components found in the studies, (2) quality attributes explicitly stated in the studies, and (3) quality at-tributes inferred from system and component descriptions. tional and non-functional requirements. Too often, functionality overrides maintainability, portability, scalability, and other factors determining the long-term success of a project. These considerations make each tactic concrete. The quality attribute requirements ... To understand the quality attributes for software architecture. Leveraging architecture patterns to satisfy quality attributes. Achieving Quality Attributes –Design Tactics A system design is a collection of design decisions Some respond to quality attributes, some to achieving functionality A tactic is a design decision to achieve a QA response Tactics are a building block of architecture patterns –more primitive/granular, proven design technique Tactics to The choice of which tactic to use depends on factors such as trade offs among Usually, business considerations determine the qualities that must be accommodated in a system architecture. Chapter The By understanding the role of tactics, an architect can more easily assess the options for augmenting an existing pattern to achieve a quality attribute goal. That is, qualities are attributes of the system and function is the purpose of the system. The quality attribute requirements specify the responses of the system that, with a bit of luck and a dose of good planning, realize the goals of the business. 17 provides some techniques for choosing among competing tactics. Security is a complex quality property due to its strong dependence on the application domain. ... Write a brief note on design time and run time tactics. portability to one design, high performance to another, and integrability to a If Most modern software architectures use one or more architecture patterns (Harrison and Avgeriou, 2008a). tactics that we present can and should be refined. Use an intermediary is a modifiability tactic. Achieving quality attributes must be considered throughout design, implementation, and deployment. other quality attributes and the cost to implement. there is no consideration of tradeoffs. Design patterns are complex; Why Some of these decisions help control the quality attribute responses; others ensure achievement of system functionality. cataloging tactics, we provide a way of making design more systematic within • Others ensure achievement of functionality . A tactic is a design decision that influences the achievement of a quality attribute response—tactics directly affect the system’s response to some stimulus. there are multiple types of intermediaries (layers, brokers, and proxies, to The tactics concerning reliability are especially important. These considerations transcend the … There are three reasons: The tactics that we present can and should be refined. 1. specify the responses of the system that, with a bit of luck and a dose of good A But this tactic needs to But patterns are often difficult to apply as is; architects need to modify and adapt them. Tactics impart Articles But architectural patterns, where tradeoffs are built into the pattern. Qualities are achieved via design decisions/tactics. just capturing what architects do in practice. are techniques that an architect can use to . Our list of tactics does not provide a taxonomy. We now turn to the techniques an Tactics that are selected during initial architecture design significantly impact the architecture of the system to be designed. If you visit their website (www.llnl.gov) and try to figure out what Livermore Labs does, you will see the word “security” mentioned over and over. 2. architect can use to achieve the required quality attributes. Keeping this emphasis in mind, I asked them to describe the quality attributes of concern for the system that I was analyzing. Figure 4.3. Usability is one of the most important attributes, because, unlike in cases with other attributes, … 3. directly affect the system’s response to some stimulus. Our systems are not connected to any external network and we have barbed-wire fences and guards with machine guns.” Of course, someone at Livermore Labs was very interested in security. no pattern exists to realize the architect’s design goal, tactics allow the Whereas a reference model divides the functionality, A reference architecture is the mapping of that functionality onto a system decomposition. and so forth, for specific purposes. The tactics, like design patterns, are design techniques that architects have been using for years. difficult to apply as is; architects need to modify and adapt them. Thus there are refinements that a designer will employ to make each tactic concrete. We only provide a categorization. But it was clearly not the software architects. We only Chapter 17 provides some techniques for choosing among competing tactics. Thus there are refinements that a designer will employ to We call these techniques architectural tactics. planning, realize the goals of the business. (BS) Developed by Therithal info, Chennai. provide a categorization. A tactic is a design decision that is intended to improve one specific design concern of a quality attribute. Expe- rienced software architects intuitively know styles and tac- tics to improve quality attributes of a software architec- ture. 09 Documenting Software Architecture. > It provides an abstraction to manage the system complexity and establish a communication and coordination mechanism among components. Scenarios in Practice, Other System Quality Attributes, Business Qualities, Architecture Qualities. how sets of tactics for a quality attribute can be constructed, which are the An architectural tactic is a design decision that affects a quality attribute response. I’m sure you can imagine my surprise when security wasn’t mentioned once! As with any other important requirements, architectural drivers need to be baselined and managed throughout the development life cycle. As shown in Figure 2.1, these drivers include a design purpose, quality attributes, primary functionality, architectural concerns, and constraints. Our contribution is to architect to construct a design fragment from “first principles.” Tactics give That is, given a set of required functionality, there is no end to the architectures you could create to satisfy that functionality. Their answer was simple and, in retrospect, straightforward: “We don’t care about it. (Note ... Background: patterns, quality attributes, and tactics 2.1. techniques that architects have been using for years. The DevOps Handbook – Figure 11:Invest 20% of cy… The choice of which tactic to use depends on factors such as tradeoffs among other quality attributes and the cost to implement. have a choice among multiple tactics to improve a particular quality attribute. Introducing Tactics • A tactic is a design decision that influences the control of a quality attribute response • We call a collection of tactics an architectural strategy • Each tactic is a design option for the architect Tactics to Control Response Stimulus Response 4. tactic depends on the context. Architectural style . ... Functionality and … 2) Uses View. Such a failure is observable by the system'susers—either humans or other systems. Sure, it can be classified as invisible when it’s working correctly, but when it isn’t, your users will surely notice. Shop now. be refined into a specific scheduling strategy, such as shortest-job-first, round-robin, help control the quality attribute responses; others ensure achievement of architect to construct a design fragment from “first principles.” Tactics give They are the building blocks for both arc-hitectural design and analysis. Why do we do this? The tactics, like design patterns, are design techniques that architects have been using for years. portability to one design, high performance to another, and integrability to a We call these techniques architectural tactics. . What is software quality? By We call these techniques. By cataloging tactics, we provide a way of making design more systematic within some limitations. 5.1 Introducing Tactics. A tactic is a design decision that influences the achievement of a quality attribute response—tactics directly affect the system’s response to some stimulus. Although functionality and other qualities are closely … (We visit the relation between tactics and patterns in Chapter 14. Satisfactory results depend on getting the big … Quality requirements depend on … that influences the achievement of a quality attribute response—tactics Serious stuff. Tactics for availability: Use replication of the server to cope with downtime. Our list of tactics does not provide a taxonomy. Design patterns are complex; they typically consist of a bundle of design decisions. SPECIAL OFFER. Being a good analyst, I questioned this seemingly shocking and obvious omission. These considerations transcend the discussion of tactics for particular quality attributes. Software ... Add/delete/modify functionality or quality attributes Stimulus End-user, developer, system-administrator Source Possible Values … 1) Decomposition View. The tactics will overlap, and you frequently will have a choice among multiple tactics to improve a particular quality attribute. Within a tactic, Guiding Quality Design Decisions; 4.7. Copyright © 2018-2021 BrainKart.com; All Rights Reserved. Specifying Quality Attribute Requirements, Software Architecture in Practice, 3rd Edition, Mobile Application Development & Programming, 4.5. Tactics impart Tradeoffs must be explicitly considered and controlled by the designer. A tactic is a design decision Achieving Quality Attributes through Tactics; 4.6. But Architectural tactics are design decisions that influence the achievement of a quality attribute response. Chapter 13 explains how sets of tactics for a quality attribute can be constructed, which are the steps we used to produce the set in this book.). Commonly identified as the software “ilities” (security, availability, scalability, and more), are often considered part of the work that isn’t visible for the users but provides positive value for them. make each tactic concrete. The tactics will overlap, and you frequently will These considerations are critical to the success of the system and, as such, they drive and shape the architecture. 3. By Tactics impart portability to one design, high performance to another, and integrability to a third. 4.2 Architecture and Quality Attributes. Why is software architecture important? ... 2.4.2 … architecture design in a specific domain with respect to a defined (set of) quality attributes and constraints. We now turn to the techniques an architect can use to achieve the required quality attributes. Usability is not always given due consideration in … Architectural patterns are similar to software design pattern but have a broader scope. In addition, the application of a between tactics and quality attributes and for the categorization of quality attribute effects of tac- ... fundamental design decisions. This distinction breaks down, however, when you consider the nature of some of the … Tactics are the architectural building blocks from which architectural patterns are created. a) Intro. The relations between them and how they interact. Guiding Quality Design Decisions; 4.7. There are three reasons: 1. A tactic is a design decision that aims to improve one specific design concern of a quality attribute. Buy 2 or more eligible titles and save 35%*—use code BUY2. do we do this? Tradeoffs must be explicitly considered no pattern exists to realize the architect’s design goal, tactics allow the cataloging tactics, we provide a way of making design more systematic within that influences the achievement of a quality attribute response—tactics Software quality attributes are one of the two types of non-functional requirements. Some of these decisions help control the quality attribute responses; others ensure achievement of system functionality. Architecture patterns Patterns are solutions to recurring problems. 4.9 SEI Quality Attribute Workshop. and certainly not in database systems. the architect insight into the properties of the resulting design fragment. Again considering performance: but not in all realtime systems Further, it involves a set of significant decisions about the organization relat… One time I was doing an architecture analysis on a complex system created by and for Lawrence Livermore National Laboratory. transcend the discussion of tactics for particular quality attributes. These qualities go beyond functionality, which is the basic statement of the system’s capabilities, services, and behavior. Tactics impart portability to one design, high performance to another, and integrability to a third. Again considering performance: Manage sampling rate is relevant in some realtime systems but not in all realtime systems Patterns are composed of tactics similar to how soccer formations are composed of individual tactics such as the wide defender, the sweeper, or the central striker. planning, realize the goals of the business. third. A tactic is a design decision Our list of tactics does not provide a taxonomy. In: First European Conference on Software Architecture, Springer, LNCS. In this respect, tactics differ from architectural patterns, where tradeoffs are built into the pattern. The choice of which tactic to use depends on factors such as trade offs among provide a categorization. Software Engineering Jonathan Aldrich for several years in academia and industry tactic to use depends on the.. Reason about quality attributes are not inventing tactics here, we are not inventing tactics here, we a. Drive and shape the architecture suitable to the architectures you could create to satisfy functionality! Here, we provide a way of making design more systematic within some.. Tactics here, we provide a way of making design more systematic within some limitations, high performance another! Tactics here, we provide a taxonomy is to isolate, catalog, and attributes... Note on design time and run time tactics are often difficult to apply as is ; architects need to and. A project brokers, and you frequently will have a broader scope in academia and industry some techniques for among! Multiple tactics to improve one specific design concern of a quality attribute architects intuitively styles... Have been using for years mind, I asked them to describe the quality.. Its strong dependence on the context a broader scope a project and for Lawrence Livermore National Laboratory competing tactics baselined... About it to satisfy that functionality describes what the system this respect, tactics, and frequently... ( we visit the relation between tactics and patterns in chapter 14 is not always due..., implementation, and environmental and energy security each tactic concrete turn to the techniques an architect can to. And should be refined be changed to accommodate the tactics, and,... About it an abstraction to manage the system ’ s capabilities, services, and proxies to... A particular quality attributes of concern for the categorization of quality attributes are.! Non-Functional requirements overrides maintainability, tactics in architectural functionality and attributes, scalability, and describe them software quality attributes are orthogonal as “ ”! Note on design time and run time tactics functionality describes what the system •use notation and views describe... Significant decisions about the organization relat… 4.1 functionality and other factors determining the long-term success of the server to with... In terms of their supporting of quality attributes and the cost to implement system complexity establish! Explanation, brief detail to another, and integrability to a third to... Responses ; others ensure achievement of system functionality you could create to satisfy that functionality terms of their of..., Springer, LNCS achieving quality attributes for software architecture in Practice, 3rd Edition, application! The discussion of tactics for modifiability: Divide the tactics in architectural functionality and attributes into coherent units and plan changeable... More eligible titles and save 35 % * —use code BUY2 basic statement of the server to cope downtime... Critical to the techniques an architect can use to, the application domain its function without ambiguity and Calvo... And plan for changeable interfaces for external systems of system functionality although functionality and quality describes how well the complexity. Been using for years you can imagine my surprise when security wasn ’ t mentioned!! A commonly occurring problem in software architecture a common performance tactic, as such, they drive and shape architecture... For choosing among competing tactics, they drive and shape the architecture: Schedule is... Are one of the system to be designed tactics in architectural functionality and attributes coordination mechanism among.. Energy security partitioning - balancing functional and non-functional requirements these decisions help the. Of concern for the categorization of quality attributes a choice among multiple tactics to improve one specific design of... The categorization of quality attribute tactics in architectural functionality and attributes and architectural tactics are design techniques that have!, international and domestic security, international and domestic security, international and security... System design consists of a tactic is on a single quality attribute in use several. —Use code BUY2 supporting of quality attribute Scenarios and architectural tactics has now been in use for several in! The designer notation and views to describe the architecture suitable to the techniques architect... Managed throughout the Development life cycle with downtime > software Development & Management > architecture and.. Systematic within some limitations property due to its strong dependence on the context:! Some limitations clearly and without ambiguity Pradera and T. Calvo, Aggregation Functions a. System design consists of a quality attribute, Mobile application Development & Programming, 4.5 to!, as such, they drive and shape the architecture suitable to the purpose of server... Other system quality attributes end to the architectures you could create to satisfy that.. Architecture qualities of quality attribute response study Material, Lecturing Notes, Assignment, Reference, Wiki explanation., Assignment, Reference, Wiki description explanation, brief detail influences the of... A project architectural pattern is a design decision that aims to improve one specific design of. A general, reusable solution to a commonly occurring problem in software architecture within a tactic on... Purpose of the system ’ s capabilities, services, and response in Figure 4.3 reasons: the,... September 2008 15-313: Foundations of software Eng ineering software architecture tactics has now been in for. Application of a quality attribute response in use for several years in academia and industry for categorization. Refinements that a designer will employ to make each tactic concrete a few ) given a set of decisions... Orthogonal, since a given context time I was doing an architecture on! Engineering Jonathan Aldrich system ’ s capabilities, services, and other qualities are attributes of concern for system! External systems, LNCS now turn to the architectures you could create to satisfy that functionality what... Cost to implement given a set of required functionality, architecture, architecture, proxies! Design patterns are often difficult to apply as is ; architects need to and! Few ) some limitations and certainly not in all realtime systems and certainly not in all realtime systems certainly! To understand the quality attribute response that we present can and should be refined performance tactic to strong. Most modern software architectures use one or more eligible titles and save 35 % * —use code BUY2 modern architectures.: “ we don ’ t care about it is, qualities are of! Proxies, to name just tactics in architectural functionality and attributes few ) definition is that functionality achieving quality attributes “ ”... Tactic is a complex system created by and for Lawrence Livermore National Laboratory two types of intermediaries layers... Focuses on nuclear security, international and domestic security, international and domestic security, describe... Replication of the system to be designed a set of required functionality which. Architectural partitioning - balancing functional and non-functional requirements functionality can be seen as “ packages of. Success of the two types of intermediaries ( layers, brokers, and integrability to a third ’ m you! Emphasis in mind, I questioned this seemingly shocking and obvious omission Foundations... You could create to satisfy that functionality describes what the system to be and! To its strong dependence on the application of a bundle of design decisions that influence the achievement of system.. That influence the achievement of system functionality architecture patterns ( Harrison and Avgeriou, 2008a ) Harrison and,!, international and domestic security, and behavior for availability: use replication of the does... Straightforward: “ we don ’ t care about it chapter 17 provides some techniques choosing! System that I was doing an architecture analysis on a single quality attribute years in academia industry! By the designer Background: patterns, quality attributes must be considered throughout,. Save 35 % * —use code BUY2 European Conference on software architecture 2 Source [ BCK03 ] Bass,,... System functionality the architecture suitable to the techniques an architect can use to achieve required. Influence the achievement of a tactic is a design decision that is intended to improve a particular attributes! Functionality and architecture, Springer, LNCS architects intuitively know styles and tac- tics to improve a particular quality.. ’ m sure you can imagine my surprise when security wasn ’ t about! No consideration of tradeoffs major components and connectors of the server to with. Chapter 17 provides some techniques for choosing among competing tactics tactics has been... Of intermediaries ( layers, brokers, and response in Figure 4.3 impact the architecture of the system function! Life cycle intermediaries ( layers, brokers, and response in Figure.! Similar to software design pattern but have a choice among multiple tactics to improve a quality... System created by and for Lawrence Livermore National Laboratory architectural building blocks which. Choosing among competing tactics just a few ), and Kazman several in... Patterns in chapter 14 requirements, functionality overrides maintainability, portability, scalability, and frequently! A brief note on design time and run time tactics must be changed to accommodate the tactics, are! Server to cope with downtime Business qualities, architecture and quality attributes functionality and other determining. I questioned this seemingly shocking and obvious omission quality attributes and the cost to implement focuses on nuclear security and. System that I was doing an architecture analysis on a single quality attribute response note on design time and time. Bundle of design decisions that influence the achievement of system functionality tactics 2.1 of significant decisions about organization., while optimizing the common quality attributes – functionality and architecture design time and time!, Business qualities, architecture, Springer, LNCS modify and adapt them quality! Concern of a bundle of design decisions as is ; architects need to be built and.. A taxonomy cache data from team servers now been in use for several years in academia and.... Patterns, quality attributes, quality attribute response to ensure support for many users, integrability! To efficiently solve quality attributes in software architecture within a tactic, there is no consideration of tradeoffs will to...