Seller acquirers, advertising companies, agencies, community groups, financial companies, fulfillment companies, legal companies, management tools, platforms, research tools, sellers, and tax companies are listed. These categories cover the most relevant areas of the market. Community groups are not companies, but they play an essential role and often influence thousands of businesses’ decisions.

Marketplace Pulse 100 ranks the most important companies in the e-commerce marketplaces ecosystem. Tens of billions of gross merchandise volume (GMV) on various marketplaces are transacted, enabled, or managed by one of them. The rank considers the company’s size, capital raised, estimated user base, and industry influence.