Enterprise architecture (EA) is the process of aligning business and IT strategies, processes, and resources to achieve organizational goals and objectives1. EA implementation involves a significant amount of change in the enterprise, such as introducing new technologies, standards, policies, roles, and responsibilities2. Therefore, managing the challenge of change is MOST important to the successful implementation of EA, as it requires effective communication, stakeholder engagement, change management, and governance mechanisms34. Without managing the challenge of change, EA implementation may face resistance, confusion, conflict, or failure. References :=
* Entreprise Architecture: Critical Factors and Implementation | IEEE ...5
* A Review of Critical Success Factors of Enterprise Architecture ...3
* Critical Success Factors of Enterprise Architecture Implementation - IJOCIT1
* EVALUATION OF ENTERPRISE ARCHITECTURE IMPLEMENTATION: A CRITICAL ...4

An enterprise architecture (EA) framework is a set of principles, guidelines, standards, and tools that help design, plan, implement, and govern the IT architecture of an enterprise. One of the main benefits of using an EA framework is that it provides reference models to align IT with business, such as the Business Architecture, the Information Systems Architecture, and the Technology Architecture. These models help define the business vision, goals, processes, information, and technology requirements of the enterprise, and ensure that they are consistent and coherent across the organization. By using an EA framework, IT governance can ensure that IT supports the business strategy, delivers value, manages risks, and optimizes resources. References:
What is enterprise architecture? A framework for transformation
TOGAF | opengroup.org

Critical success factors (CSFs) are the essential elements or conditions that must be achieved for a project or program to be successful. CSFs help to define the scope, objectives, and expected outcomes of the project or program, as well as the key performance indicators (KPIs) and metrics to measure and evaluate the progress and results. CSFs also help to align the project or program with the strategic goals and vision of the organization, and to communicate the value proposition and benefits to the stakeholders. Therefore, before launching a new program involving the use of artificial intelligence (AI) and machine learning, an airline should define the CSFs to ensure that the program is feasible, desirable, and viable, and that it meets the business needs and expectations of the customers and the market. References := CGEIT Review Manual, Chapter 1: Framework for the Governance of Enterprise IT, Section 1.2: GEIT Principles, Subsection 1.2.3:
Principle 3: Ensure Outcomes Are Delivered Through Effective Use of IT, Page 28.