The chapter explores the development of a specific process e-Commerce metamodel for reuse and interoperability, which is proposed to obtain the taxonomy of e-business processes. It defines a specific ontology and semantics of independent processes platform. This is achieved with the help of the principles proposed by the Model Driven Engineering (MDE), specifically the proposal for the OMG, Model Driven Architecture (MDA), enabling it to minimize the time and effort required to create ecommerce solutions.