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Software architecture takes on a holistic approach to software development and focuses on understanding how a system works as a whole. It is a master plan that defines system structure along with tasks to be performed by the design and implementation teams. As it defines relation between requirements and system components, it helps in evaluating if a particular design approach will produce an acceptable system.
At QBurst, we believe that software systems should be built on clearly defined architecture. Applications need to be built on a strong foundation as well as designed based on specific requirements. The software architect works through the complexities of a system to produce a high level model. He takes into account the end-user, IT infrastructure and business goals while designing application architecture and comes up with a suitable structure that will minimize business risks associated with developing a technical solution.
Some of the key factors considered while creating a software architecture are:
A well-architected system can survive requirement changes, extension, adaption, partial failure, platform changes, etc. Such software systems display higher performance and can be more easily integrated with others. Components of such a system can be built and maintained independently and even reused.
Building a system based on key principles and proven techniques of software architecture help to promote usability and extensibility. Many factors influence the selection of architectural style and we often build applications using a combination of different architectural styles.
Separation of concerns is an important factor in software architecture. Layering is used to structure and separate the functions of a system. Dividing an application into distinct functionalities makes it easier to optimize features or functionalities independently. Developers are then able to isolate technology upgrades to individual layers reducing the impact on the overall system. This improves overall manageability of a system.
In short, a software architect proposes a technical solution for an application based on the non-functional requirements such as performance, scalability, and availability. While designing the system architecture, it is important to ensure flexibility to support future requirements and challenges. Therefore, an iterative approach is adopted so that architectural designs can be easily evolved over time. Moreover, architectural strategies are often developed out of collaborative effort of architects and developers.