An accredited training organization (ATO) is permitted to train candidates for EXIN exams. All ATOs only use EXIN accredited courseware and accredited trainers.

In order to be able to hold EXIN exams an accredited examination organization (AEO) must have their the processes, supervisor and employees accredited.

Accredited courseware providers (ACP) create training materials for EXIN exams. An ACP can offer their courseware to accredited training organization.

To be able to train candidates each ATO has to have accredited trainers (AT). These can be employees of the accredited training organization (ATO) or freelance trainers that are hired specifically because they are EXIN accredited. Accredited trainers cannot work independently as they must always be under the designation of an ATO.