hey! can you tell me how can a reseller works and how they make business so much valuable?
Reseller means they are the mediator between a host and the customer they provide them disk space and the proper technical support.
Reseller hosting is basically depends on selling something on the behalf of the main hosting company means they are work as a marketing agents.
A reseller can host multiple domain because a webmaster may require a network of websites under different domain names to serve different business plans, but all are hosted under a common reseller hosting account.