The development of web 2.0 increases the call for agile and simple business process support. SOA (Service oriented Architecture) provides companies a new model to build their IT applications around their business processes and to combine them dynamically with the services of partner companies. Moreover cloud computing offers new business models and deployment opportunities to support adaptive and scalable execution environment. However, to provide services collaboration from several companies, the security policy associate to each company must be respected. So, the Business Process (BP) provides by these companies services inter-connections should be adapted to the security policy of each company and to the platform where it will be deployed. This leads to propose a new platform based on MDE (Model-Driven Engineering) approach to allow companies to build and deploy safely their BP in the Cloud environments.