This chapter covered the Q&A for enterprise architecture and modernization domain. Enterprise Architecture is a collection of strategic information that describes business, application, data and infrastructure to operate the business. This also includes mission & goals, business processes, roles, organizational structures, information, applications and systems. The section also covered the Q&A for the enterprise architecture, application architecture, business architecture, and data architecture, infrastructure and security and architecture governance. The key skills SMEs will learn will be methodologies, best practices and frameworks, common pitfalls to be avoided and patterns to leverage, architecture governance concepts, principles and guidelines for various domains, best practices architecting, KPI and success factors.