Component adaptation is one processing approach to develop flexible, reusable, traceable and reliable applications in modern software engineering industry [19]. When applying this technology to Publish/Subscribe paradigm for its different functionalities, there are several aspects such as using methodology and variants identification have to be considered. The principle of Model-driven architecture is used to construct the adaptive architecture of Publish/Subscribe paradigm because of its advantages [22, 24]. It could be used to classify different system aspects into models and the components adaptation could be performed by the transformations of these models. In order to identify the functional variants of Publish/Subscribe systems for establishing these models, fundamental researches on some famous Publish/Subscribe systems are necessary. The variations should be identified carefully base on the researches because they will affect any further developments according to their closely linked relationship. All these processes were finished in this internship and a methodology is successful established with the proofs of a prototype. The details of each aspect are analyzed in this report.