This report provides an overview of Walmart's Management Information Systems (MIS), focusing on the interconnectedness of its various business divisions, including Walmart US, Supercenters, Discount Stores, and Neighborhood Markets, highlighting the role of technology and infrastructure in facilitating communication and data flow. It examines different forms of data used by Walmart and the responsibilities of data warehousing, including the use of Executive Support Systems (ESS), Knowledge Management Systems (KMS), and Decision Support Systems (DSS). The report also addresses Walmart's code of conduct and compliance with GDPR data protection legislation, considering ethical, legal, and professional implications. The analysis includes the CAMELS approach for evaluating current information systems and the adoption of cloud technology for data management and security.