$1.$ Email server: It provides the communication between internal and external operation that includes sensitive data and information. $2.$ Employee database: It contains all the sensitive data information related to company staff like personal details, roles etc. $3.$ Customer database: It contains customer sensitive data like customer personal details, order details, transaction records and payment details. $4.$ Web server: This web server is e$-$commerce platform that provides interface between company and customers. $5.$ Order database: It contains all information related to order details, transaction history, inventory information that are important for order fulfilment and financial tracking. TVA worksheet