With Application Server, you must choose the applicable functionality according to the purpose of the system to be built and operated.

This subsection describes which functionality, from among the functionality extended on Application Server, is best used in which system. The functionality-wise mapping is described on the basis of the following points:

• Reliability
  This functionality is best used in a system, from which high reliability is expected.
  This category includes the functionality for enhancing the system availability (stable operations) and fault tolerance, and the functionality for enhancing the security such as user authentication.
  
• Performance
  This functionality is best used in a system, which adds value to the performance.
  This category includes the functionality used for the performance tuning of a system.
  
• Operation and Maintenance
  This functionality is best used when efficient operation and maintenance is to be performed.
  
• Scalability
  This functionality is best used when a system is to be flexibly expanded or reduced, and when the system configuration is to be flexibly changed.
  
• Others
  This functionality is used to comply with other individual purposes.
  

The functionality expanded on Application Server include the Java EE standard functionality and the functionality independently expanded on Application Server. When you choose the functionality, you confirm the compliance with the Java EE standards, as and when required.

Organization of this section

1.2.1 Functionality used when executing batch applications

1.2.2 Functionality for scheduling Enterprise Beans using CTM

1.2.3 Other extended functionality