also called network marketing or pyramid selling, is a controversial marketing strategy for the sale of products or services where the revenue of the MLM company is derived from a non-salaried workforce selling the company's products or services, while the earnings of the participants are derived from a pyramid-shaped or binary compensation commission system. An MLM strategy may be an illegal pyramid scheme.

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In multi-level marketing, the compensation plan usually pays out to participants from two potential revenue streams. The first is based on a sales commission from directly selling the product or service; the second is paid out from commissions based upon the wholesale purchases made by other sellers whom the participant has recruited to also sell product. In the organizational hierarchy of MLM companies, recruited participants (as well as those whom the recruit recruits) are referred to as one's downline distributors.

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