  Now-a-days they are very much considering about the changes to be done at
shorter time since the reaction time needs are decreasing every moment.
Business Logic Evaluation Model (BLEM) are the proposed solution targeting
business logic automation and facilitating business experts to write
sophisticated business rules and complex calculations without costly custom
programming. BLEM is powerful enough to handle service manageability issues by
analyzing and evaluating the computability and traceability and other criteria
of modified business logic at run time. The web service and QOS grows
expensively based on the reliability of the service. Hence the service provider
of today things that reliability is the major factor and any problem in the
reliability of the service should overcome then and there in order to achieve
the expected level of reliability. In our paper we propose business logic
evaluation model for web service reliability analysis using Finite State
Machine (FSM) where FSM will be extended to analyze the reliability of composed
set of service i.e., services under composition, by analyzing reliability of
each participating service of composition with its functional work flow
process. FSM is exploited to measure the quality parameters. If any change
occurs in the business logic the FSM will automatically measure the
reliability.
