In the arena of application development, developers all over the world use various programming languages, technical processes, and technical tools. While using number of technical & non technical elements the processes or methods become complex, for simplification of the application development process, developers use various techniques such as dividing the application architecture into layers or parts. In the professional & technical language this separation or division process is called N -Tier Application Development process, where “N” stands for number and “tire” stands for layers or parts.

In the field of application development, architecture of an application plays significant role. It is the architecture which makes the application development simple or complex and for deciding the architecture, developer needs to consider some very essential elements such as performance, scalability and future development issues. Most importantly developers try to make simple architecture for the application, for making the architecture simple, developers use the concept of N-tire, which means dividing the architecture into certain layers and developers can make changes & additions on each layer, by this way developers use to make the architecture simple for application development. Now what is N-tire architecture is essential to know, basically it includes at least three logical layers or parts such as presentation tier, business tier and data tier.

• By using objects & classes user interface display happens in the presentation layer.
• In the business layer data recovering, data modification and data deletion from and to data tier and sending data to presentation layers takes place.
• Data tire is the layer which itself is a source of data or database.

Reason of using N-tire architecture is reducing the complexity in adding new features to the application; developers need not to redeploy the whole application for making any change. For instance this division do not affect each other such as if developer does any changes to presentation layer, then it will not affect remaining two layers.

There are various technologies in which N-tire applications can be developed such as J2EE, ASP.NET, etc. Size and kind of the business may affect the decision of developing the application but as this work is critical without expertise. Separating the application into three layers, for making desired changes, may create other issues lead to unproductive technical complexity. Developing N-tire architecture in the application development should be done under professional jurisdiction such as there are various web application development companies, available for these kinds of services.

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