This article discusses the role of information technology in the success or failure of Marks and Spencer. It explores how IT helps in managing business operations globally, maintaining sales, and marketing products and services. It also highlights the social and ethical issues that pertain to running a business, such as environmental protection and individual rights. Additionally, it identifies and differentiates between different types of networking technologies and emphasizes the importance of internet and intranet in business. The article also covers the different stages of the system development lifecycle.