Part III of the course The Practice of Enterprise Architecture provides a high-level discussion of other important aspects of enterprise architecture and an EA practice. This part addresses diverse secondary facets of an EA practice omitted in the previous sections including architects, architecture functions, architecture governance, EA tools and modeling languages, EA-related measurements, initiation and maturity of an EA practice as well as the relationship between an internal EA practice and EA consulting.

Part III consists of four consecutive sections:

• Section 16 (Architects in Enterprise Architecture Practice) discusses the role and skills of architects, common architecture positions often found in organizations, their differences and relationship

• Section 17 (Architecture Functions in Organizations) discusses the general role and structure of architecture functions in organizations as well as the roles and different types of architecture governance bodies

• Section 18 (Instruments for Enterprise Architecture) discusses specialized modeling languages and software tools for enterprise architecture, templates for EA artifacts, architecture debt and quantitative measurements for an EA practice

• Section 19 (The Lifecycle of Enterprise Architecture Practice) discusses the initiation of an EA practice in organizations, maturity of an EA practice and the role of external consultancies in an EA practice