HDI stands for Help Desk Institute, and its certifications are for the technical service and support industry. An HDI certification is recognition of one's skills in a particular area.
HDI is a global membership, training and certification association for technical service and support professionals founded in 1989. Its certifications range from customer support to support center director. HDI publishes standards upon which its exams are based. Vendor-neutral information technology certifications are also available that focus on hardware from CompTIA and a project management professional certification offered by Project Management Institute. Vendor-specific certifications are available directly from Microsoft, Cisco and Apple.