There are three types of customer accounts: end user, reseller, and integrator.
End user
An end user is a person who purchases a product with the intent to use it for personal use only.
Reseller
A reseller is a company or individual (merchant) that purchases products with the intent to sell them to an end user.
Integrator
An integrator, also known as a systems integrator, is a company or individual (merchant) that purchases components with the intent to include them in whole or in part with a completed product or service.