AbstractThe Architecture of Enterprise Architecture paper answers questions such as; what makes up enterprise architecture? where is enterprise architecture relative to other enterprise processes? and what is necessary to make enterprise architecture work in the complex environments where it is deployed? This paper presents a categorization of architecture offerings that can be used to position and describe the architecture space and provides summarized and supportive information to the main thesis including architecture in the value chain, the social framework in which architecture exists, the skills required for success, and a view of the roles and responsibilities of architects.