Hereafter we analyse the implication for developers of the three market trends presented in the previous section. In fact, the centralization of portal changes the way developers can distribute their application and reach a mass-market of consumers. The technological openness implies that developers would use different standards to develop their application and somehow work in a more collaborative mode. Then, highly-integrated platforms offer more possibilities to develop more sophisticated applications and services. These trends can be seen as opportunities but also threats for developers. Therefore, it is crucial that developers have a good understanding of the possible implications of each trend. They need to be able to choose the platform for which they want to develop knowing all the implications.