Service is a one of the computing paradigms. In computing service is a mechanism to enable access to one or more capabilities, where the access is provided using a prescribed interface and is exercised consistent with constraints and policies as specified by the service description.
Example:
In ATM
- Capability: Allows a customer to withdraw money is a service. It enables him to access his account and withdraw(capability) money. It occurs at a prescribed interface i.e at ATM.
- Constraints: There is a limit on the amount that can be withdrawn or number of transactions within a day
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