This report provides a comprehensive overview of Enterprise Architecture (EA), starting with an introduction to its importance in today's rapidly changing business environment. It then presents a detailed case study of Johnson & Johnson, analyzing the company's challenges and proposing solutions centered on EA. The report explores the Zachman Framework, explaining its application in the case study. Furthermore, it delves into various EA frameworks, including TOGAF, FEA, and Gartner, comparing their methodologies and highlighting their strengths. The report also discusses the relationship between EA and Service-Oriented Architecture (SOA), emphasizing their complementary roles in achieving organizational goals. Overall, the report offers valuable insights into the practical application and strategic importance of EA in modern business.