Implementing information system within an enterprise is supposed to integrate the business vision and goal sufficiently. Failing to do so shall waste a lot of information system resources. In this study, we utilize an Architectural Integrated Business Process (AIBP) approach that makes use of software architecture on both business process and information system. This approach refers business process when doing analysis and design of information system. AIBP approach is likely favored by corporate executives, thenceforth help gain the most profit for the information system within an enterprise. AIBP approach uses software architecture to describe business process, and information system as well. There are two major factors in software architecture. The first one is the structure and the second one is the behavior. Structure is used to describe the elements of a system, while behavior is used to describe the interaction among those elements. Both structure and behavior will be formed in the same hierarchy, also called the architecture hierarchy. Once an architectural integrated business process is specified, the following implementation of information system becomes an easy task. The architecture hierarchy will guide the decomposition of information system correctly. AIBP also offers great amount of knowledge on the development of software components.