Transformation to A More Flexible Software Architecture with Agile

The software architecture is the backbone of a system, in which the components of the system have a relationship with each other, as well as the environment and the principles guiding its design and evolution. The traditional, rigid waterfall architecture puts a curb on the phases of the project development but the agile software architecture is flexible and allows changes to be incorporated even during the latter phases of the project development. This Agile software architecture helps in the expansion of the system to take place in a sustainable, easy and gradual way along with the complicated project development.

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Comparing the Traditional Software Architecture to the Agile Software Architecture

The rigid traditional Waterfall architecture can be compared to that of the agile software architecture on the basis of three areas, such as:

#1. The Particulars of the Software Architect Role:

Traditional Software Architect

In the traditional software architecture, there is only one type of role played by the software architect. He is responsible for analyzing the requirements and taking the technical decisions about the development of a project. In the small organizations, there is only one software architect, whereas in the larger organizations, there is a team of software architects.

Responsibilities of the Traditional Software Architect:

• Focus on the Big Picture: A software architect should be able to perceive how the system would look in future. He should also consider the other systems and the communications between them.

• Compliance-oriented: the software architect has to consider the compliance issues like legislative norms, standards, licenses, or others, and ensure the system in future should meet these vital aspects.

• Produces Blueprints: In this architecture, an important aspect is the collection of diagrams and documents, describing architecture from the different perspectives. The development team utilizes these deliverables to begin building the system.

• Not Much Hands-On Experience: The responsibility of the software architect is to furnish the final documents for the development team and he acts as a mentor for the developers to create the designed system.

Agile Software Architect:

In this type of architecture, three roles are described by the Scrum methodology of Agile.

Responsibilities of the Three Roles:

• Product Owner: He is responsible for offering information about the particular business domain.

• Scrum Master: He is responsible for helping in the collaboration and communication in the team.

• Development Team: He is responsible for the implementation of the user stories and thereby producing the working soft wares.

#2. The Time Period of the Software Architecture:

The traditional Waterfall model has well-defined phases. Whereas in the agile world, there is no particular starting point the employees agree to start on. One approach here is the introduction of sprint #0. This is a special sprint where the environment of development is configured, along with taking fundamental decisions (for instance, database, programming language, platform etc.)  Even after the regular sprints are ready to start and the software architecture is not ready, still, there is no need to worry as the agile software architecture is a constantly ongoing process.

#3. The Output of the software architecture:

How to Organize the Documentation

The waterfall architecture requires the writing of extensive documentation, because it is employed to transfer the information between the phases, including the people involved in each phase .This is a laborious, time-consuming process, which leads to a lot of misunderstandings, due to the ill-formed features. Moreover, keeping the documentation up-to-date is difficult, as the development goes fast and does not reflect the documentation anymore. In the Agile architecture, only the important aspects of the system are described in the beginning and information is then added continuously.

 What to Document

There is no need to document, multiple times the same aspect in the multiple formats in the agile architecture, as is done in traditional architecture, which requires the collection of multiple diagrams and documents describing the architecture from the various perspectives. In the agile architecture, there are tools which help in the development of diagrams from the code, which are convenient, instead of creating separate diagrams.

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