1. A computerized method of integrating a business component as a digital representation of a business architecture of an integrated enterprise with an information technology component as a digital representation of the integrated enterprise's information technology architecture, the business component and the information technology component stored in at least one computer processing system, the method steps comprising: integrating and coupling at least one operation between an enterprise directions component stored in the computer processing system being a digital representation of the directions of the enterprise with the business component and the information technology component in the computer processing system; integrating and coupling at least one operation between an enterprise capabilities component stored in the computer processing system being a digital representation of the capabilities of the enterprise with the business component and the information technology component in the computer processing system; integrating and coupling at least one operation between an enterprise principles component stored in the computer processing system being a digital representation of the principles of the enterprise with the business component and the information technology component in the computer processing system; operationally coupling the enterprise directions component and the enterprise capabilities component; integrating the business component as a plurality of business section components comprising a business information section component and a business processes section component and a business data section component; operationally coupling the business processes section component and the enterprise capabilities component; integrating the information technology component as at least application software and an information technology data section component; operationally coupling the application software and the business processes section component and the enterprise principles component; operationally coupling the information technology data section component and the business information section component; assessing the impact upon and determining the changes of the business component resulting from changes to the information technology component prior to implementation of the changes in the information technology architecture; assessing the impact upon and determining the changes of the information technology component resulting from changes to the business component prior to implementation of the changes in the business architecture; outputting an impact assessment work product of the impact on and changes in each respective component.