Platform as a service (PAAS) featuring computer software platforms for operating and managing online marketplaces for third-party sellers; Platform as a service (PAAS) featuring computer software platforms for facilitating electronic commerce transactions between buyers and independent sellers; Platform as a service (PAAS) featuring computer software platforms for search, filtering, and retrieval of product information in online commerce systems; Platform as a service (PAAS) featuring computer software platforms for managing product listings, pricing, availability, and order fulfillment for third-party vendors; Software as a service (SAAS) services featuring software for operating and managing online marketplaces for third-party sellers; Software as a service (SAAS) services featuring software for facilitating electronic commerce transactions between buyers and independent sellers; Software as a service (SAAS) services featuring software for search, filtering, and retrieval of product information in online commerce systems; Software as a service (SAAS) services featuring software for managing product listings, pricing, availability, and order fulfillment for third-party vendors; Providing temporary use of on-line non-downloadable software for connecting buyers and independent sellers