摘要：We define the concept of services, starting from the concepts of SOA and the need of such applications in the banking systems. Then we establish a delimitation between the most used types of SOA services for integrating business modules of core banking applications with front office applications interfaces. An architecture based on SOA is used to test the services and to integrate front office logic with back office business logic. The focus is on the measurement of the performance of services which connect directly to the core business database, and the performance of services which are using an intermediate layer to address the business logic of the core application. Performance indicators are developed for evaluating services. Based on the indicators analysis, services are selected to be implemented within the integration layer of the architecture. The paper ends with conclusions
关键词：indicators; architecture; services; SOA; front office; back office; business ;logic
