The Internet of Things (IoT) is the extension of the Internet of Data to the physical world. It integrates a plethora of networks of sensors and actuators (WSAN). But it lacks a commonly adopted architecture, able to deal with its important heterogeneity and its constraints. The major trend in IoT Applications conception is based on a centralized architecture. This centralization, known as Orchestration, is a legacy of sensors and actuators networks. IoT Orchestrations are proposed by the industry to properly manage the Objects of a single protocol. However, a distributed approach can be imagined. The distributed architecture, called Choreography, can offer some solutions for interoperability and security, which are important issues of the IoT. This paper explores the pros and cons of both architectures. It also presents a mix of the two, and an implementation in our own platform (BeC 3) of distributed applications for the IoT.