The strength that Best Buy have is the good information technology (IT) and computerized system. Information technology is the application of computers to store, study, retrieve, transmit and manipulate data or information that often in context of a business that including computer hardware, software, electronics, internet, telecom equipment and e-commerce. The computerized system is a computer system with a purpose that refer to the hardware and software that comprise the computer system. Best buy use the information technology to store their customer information such as their name, Best Buy id, mailing address, email address, phone number, their credit card number and other payment information. Besides that, Best buy customers using IMEI/UDID