A system and method for managing codes during distributed software development. Code segments, or sections, are separated into logic units. Each logic unit contains one or more services. The logic units and services are registered at a registration management module, and added to the existing software code. When predefined automatic calling condition is satisfied, the corresponding service in every registered logic unit will be called automatically. Additionally, a unified interface is provided for calling services in the registered logic units. The calling of the logic unit may be affected by using the registration information of and/or a service definition defining the service of the logic unit maintained in the registration management module.