Business logic tier

The business logic tier is where information is processed using visitors data (e.g. e-shop customers) as well as that from in-house operators, and automated systems and applications. After processing, applications at this level store the data in the database or collect other necessary data from the database for additional processing or for displaying to the user. At this tier, the requirements are very high for load, reliability, adaptability and especially scalability and potential for growth. For this reason, the technology used at this level includes Java EE 5 from Sun, and .NET from Microsoft.

It is at this tier that we see most clearly the complexity of the business processes and the most-suitable application design.