Business System Planning is a method for analyzing, defining and designing an information architecture of organizations. It was first issued by IBM in 1981, though the initial work on BSP began in the early 1970s. At first, it was for IBM internal use only. Later it was made available to customers and this method became an important tool for many organizations. It is a very complex method dealing with data, processes, strategies, aims and organizational departments which are interconnected. BSP brings new approach to design an information architecture and its goals are to:
understand the issues and opportunities with the current applications and technical architecture
develop a future state and migration path for the technology that supports the enterprise
provide business executives with a direction and decision making framework for IT capital expenditures
provide information system (IS) with a blueprint for development
http://en.wikipedia.org/wiki/Business_System_Planning