"The historical roots of enterprise architecture are well recorded and span a period that starts with the Zachman framework and continues to the present day. During these twenty years of productive activity many well-known frameworks and government level initiatives have seen the light. The aim of this section is to examine the history of enterprise architecture in an attempt to discover the tradition within which it stands. This tradition is explored in terms of diversity of definitions, the components of enterprise architecture, and enterprise architecture frameworks and methods:"