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E-commerce

Marketplace

Online Marketplace | Multi-Vendor Marketplace

Portrait of Robert Klimant, co-founder of Roelu Studio
Robert KlimantCo-founder

What is Marketplace?

An online marketplace is an e-commerce platform that hosts products from many independent sellers under a single storefront and brand. Examples include Amazon, eBay, Etsy, Zalando, and Faire. The marketplace provides the audience, the search, the checkout, and the trust layer; sellers manage their listings, inventory, and fulfilment. A multi-vendor marketplace can be horizontal across many categories or vertical and focused on one specific niche.

Why it matters

Marketplaces are a tempting shortcut and a long-term tax. They offer instant distribution — millions of shoppers, no marketing required — in exchange for margin, customer data, and brand control. The shopper becomes Amazon's customer, not yours. Reviews live on the marketplace. The next purchase happens there too. For most brands, marketplaces work best as an additive channel: scale discovery on Amazon, build the relationship on the owned site, push repeat customers to direct. Going marketplace-only is a fragile bet — algorithm changes, fee hikes, or competitor undercutting can crush a business overnight.

How it works

Sellers create accounts, list products with copy and images, set prices, and ship — either themselves or through a marketplace-run logistics service like Fulfilled by Amazon. The marketplace handles search ranking, payments, fraud, and customer trust. It charges fees per listing, per transaction, or as a subscription. Discovery is algorithmic: search relevance, ratings, sales velocity, and ad spend determine who shows up first. For brands running a marketplace themselves — say, a B2B platform connecting buyers and suppliers — tools like Medusa.js and Mirakl let them build the vendor onboarding, payments split, and order routing on top of an existing commerce stack.

Related terms

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  • Headless Commerce

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  • Payment Gateway

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