IT Support is the advice service that helps people with problems with their computers. Most large companies outsource their tech support operations. They pay their tech experts to answer computer-related questions for their customers. Whether your problem is hardware or software related, IT Support can help you solve it. Here are some common types of IT Support. If you need to contact a tech support service, here are some tips: 1) Calling for help – a phone call from a technician will often solve the problem more quickly.