What is Application Architecture?

Application architecture is the organizational design of a complete software application, including all subcomponents and external application exchanges. There are several design patterns that are used to define this type of architecture and these patterns help communicate how an application will complete the necessary business processes as defined in the system requirements.

Application architecture determines how applications can be used to complete business processes.

A software application is a system designed to logically automate specific tasks to satisfy a set of requirements. It relies on underlying operating systems and databases to store and perform tasks within the application. The application architecture is the blueprint that defines how the program will interact with servers and components within the application tier domains.

A server designed or dedicated to running specific applications is known as an application server.

With the expansion of interoperability within the software, modular components have been created that specialize in specific areas of business processes within an application. The architecture defines all the components of the design and how they will communicate in the application. This definition includes all layers of an application.

There are three main areas of control in all applications: the presentation tier, the business tier, and the data access tier. Each domain within an application has a specific responsibility that, when associated with other layers, satisfies the underlying business requirements of an application.

The application’s architecture is used as a blueprint to ensure that an application’s underlying modules support future growth. Growth may occur in the areas of future interoperability, increased resource demand, or increased reliability requirements. With a completed architecture, stakeholders understand the complexities of the underlying components, should changes be needed in the future.

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With the creation of advanced object-oriented programming, organizational design has become a vital component in defining how an application will work. This is due to the widespread use of N-Tier applications in most companies. N-Tier applications allow the deployment of subcomponents or modules across multiple servers in an enterprise.

When defining the architecture of an application, it is also important to define the architecture of the application server. This server architecture overlaps with the hardware design that will facilitate the deployment of the software components. Good application server architectures must support scale-up and scale-up paradigms.

The application’s service architecture defines how the application will make key business components available to other modules of an application. By defining the available interfaces, interoperability between application layers is better understood by stakeholders within the organization.

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