IT systems are essential for any organization to function properly. They are composed of five core technologies; (networking, storage, servers, security and software). Networking is the technology that allows communication between different devices or networks. Storage refers to the data stored on computers or other media such as hard drives and flash drives. Servers store information and provide services to clients on a network. Security provides protection from malicious threats like viruses, malware and others. Finally, software helps make a system more efficient by enabling applications to run properly.