Centralized computing is computing done at a central location, using terminals that are attached to a central computer. The computer itself may control all the peripherals directly (if they are physically connected to the central computer), or they may be attached via a terminal server.

Centralized Computing Advantages are as follows:

Ease of management

There are relatively few computers to manage;

Enhanced security

The physical and logical securing of the computing environment can be more easily managed since there is only one location and a few computers;

Ease of control

The introduction of change can be managed closely since there is only one location and a few computers;

Reduced cost of ownership

Fewer computing elements to manage and therefore few people needed to manage them;

Multiple types of workload

All of the work associated with the business runs at the central computing location.

Disadvantages are as follows:

• The central computer performs the computing functions and controls the remote terminals. In case of failure of central computer, the entire system will go down.
• Central computing relies heavily on the quality of administration and resources provided to its users. Empowerment of the central computer should be adequate by all means, else the usage suffers greatly.