The current document is the outcome of the first iteration of Task 8.1. The task aims at providing the One Stop API solution for the complete SliceNet ecosystem. In this first iteration the task has interacted with the other technical and business tasks seeking a consolidated view of the slicing concept. With the provision of the refined architecture along with details of the various components the separation of roles and the technical details how this can be achieved has verified the assumptions of the task so that these can be now considered as valid concepts and principles. The effort committed to the task has not been analogous to its duration up to now as the verification process of the various assumptions had to wait certain resolutions in various technical aspects. As the business roles impact on slicing approaches is an ongoing state of the art subject, the ambition is that the proof of concept that is expected to be achieved will have a good exploitation and dissemination potential.