Information technology (IT) is the application of computers & telecommunications equipment to store, retrieve, transmit and manipulate data. It also includes other information distribution technologies such as television and telephones. IT covers various industries like computer hardware, software, electronics, semiconductors, internet, telecom equipment, engineering, healthcare, e-commerce and computer services. This field includes several physical equipment like hardware, virtualization and management, operating systems and applications (software) used to perform various functions. Information Technology also includes databases like SQL Server, Web Server, customer relationship management and enterprise resource planning systems. Computer servers run business applications. Servers interact with client users and other servers across one or more business networks. Information can be stored in file data, multimedia,telephony data and Web data, data from sensors.