Cloud Computing has now become the attention seeker in academic as well as industry. It promises seamlessly unlimited, readily available utility-based computing which was considered difficult in past. Cloud Computing is still evolving, and there is a need to hinder many challenges for faster adoption of cloud. When we see these factors there is a huge requirement of semantic models which can help effectively. In this paper we are fetching various areas where the semantic models can be applied, in functional and non functional definition or quality of service details or data modelling or it may be service description enhancement. Our major focus would be on semantic modelling of data in the cloud.[1]