a method , system , architecture and apparatus for deploying multiple e - commerce systems in a single computing platform . in accordance with the present invention , an e - commerce systems architecture can include an instantiable owning business logic component derived from an abstract business definition and one or more instantiable business element components configured for aggregation under the control of a business facility instance . the business facility instance can include a coupling to an instance of the owning business logic component . finally , the architecture can include an instantiable partner business component derived from the abstract business definition . in particular , the instantiable partner business component can include a configuration for limited access to selected ones of the instantiable business element components aggregated under the control of the business facility instance .