"Marketplace facilitator" means a person, including any affiliate of the person, who facilitates a retail sale of tangible personal property, specified digital products, or taxable services by satisfying paragraphs (1) and (2) below:
"Marketplace seller" means a seller that makes retail sales through any physical or electronic marketplace owned, operated, or controlled by a marketplace facilitator, even if such seller would not have been required to collect and pay the tax imposed under P.L. 1966, c.30 (C.54:32B-1 et seq.) had the sale not been made through such marketplace.
N.J.S. § 54:32B-3.6