The preceding chapters provided an overview of ESA, along with a survey of ESA's business value and information on how a company can evolve toward ESA. While these chapters effectively set the context for a deeper discussion of ESA, more work remains. ESA is essentially a new way of thinking about how enterprise applications are constructed and how they are used to support a business. At almost every level, ESA reshapes traditional thinking, introduces new concepts, and sets forth a new paradigm for building IT to support the needs of modern businesses. This chapter will introduce and explain the ideas that are fundamental to the transformation of IT that ESA will achieve. |