This report provides a comparative analysis of management and leadership styles at Hazev, Has, and Tas restaurant chains, contrasting them with Starbucks, focusing on the role of digital technology. It examines autocratic, democratic, consultative, and laissez-faire management styles, detailing their application within Hazev, Has, and Tas, and contrasts them with the democratic and servant leadership styles employed by Starbucks. The report further explores the use of digital technologies such as Microsoft Excel and ERP systems in Hazev, Has, and Tas, versus Starbucks' advanced use of data analytics, website, and mobile applications. Challenges faced by both restaurant groups, including employee skill gaps and hierarchical constraints, are identified, and recommendations are made for Hazev, Has, and Tas to enhance their adoption and utilization of digital technologies, improve employee involvement, and develop online services to better serve customers. The report concludes by emphasizing the importance of adapting to new technologies and fostering a more inclusive decision-making process.