This paper discusses the potential support behind the emerging services systems, which is the amalgamation of numerous modern technologies such as cloud computing, Internet of Things (IoT) and Big Data. It studies the cloud-based emerging services, useful in IoT paradigm, that support the effective data analytics. The paper introduces a new classification called CNNC {Clouda, NNClouda} for cloud data models; further, some important case studies are also discussed to further strengthen the classification. An emerging service, data analytics in autonomous vehicles, is then described in details. Challenges and recommendations related to privacy, security and ethical concerns have been discussed.