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Application architecture is the design of a software application, including sub-components and external interchanges. It defines how the program interacts with servers and components, with three main areas of control: presentation, business, and data access layers. It is important for future growth and should also define the architecture of the application server and service.
Application architecture is the organizational design of an entire software application, including all sub-components and external application interchanges. There are several design patterns 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.
A software application is a system designed to automate specific tasks in a logical way to meet a set of requirements. It relies on underlying operating systems and databases to store and execute tasks within the application. The application architecture is the blueprint that defines how the program will interact with servers and components within the application layer domains.
As interoperability within software has expanded, modular components have been created that specialize in specific areas of business processes within an application. The architecture defines all the components within the project and how they will communicate within the application. This definition includes all layers of an application.
There are three main areas of control within all applications: the presentation layer, the business layer, and the data access layer. Each domain within an application has a specific responsibility that, when merged with the other layers, fulfills the underlying business requirements of an application.
Application architecture is used as a blueprint to ensure that the underlying modules of an application will support future growth. Growth may come in the areas of future interoperability, increased demand for resources, or increased requirements for reliability. With a completed architecture, stakeholders understand the complexity of the underlying components should future changes be required.
With the creation of advanced object-oriented programming, organizational design has become a vital component in defining how an application works. This is due to the widespread use of tiered applications in most businesses. Tiered applications allow sub-components or modules to be deployed on multiple servers within an enterprise.
When defining the architecture of an application, it is also important to define the architecture of the application server. This server architecture overlays the hardware design which will facilitate the deployment of the software components. Good application server architectures should support both horizontal and vertical growth paradigms.
The application service architecture defines how the application will make key business components available to other modules within an application. By defining the available interfaces, the interoperability between application layers is better understood by stakeholders within the organization.
