IT Support is the process of resolving a computer-related problem. In the case of an IT support call, a tech expert is often required. But in the case of a service desk call, a single technician will be able to handle the problem completely. In this type of support, a technician searches for the necessary resources and waits until they are ready to address the issue. Help desks provide help to technology users, and are often required when a software or technical issue arises. IT support service desks cover a broad spectrum of technologies.