Cloud storage is a model of networked online storage where data is stored in virtualized pools of storage which are generally hosted by third parties. Access to cloud storage devices (also known as Storage-as-a-Service (IaaS) or Resource-as-a-Service (RaaS) are getting popular because of their anytime-anywhere flexibility and low cost. It is being used for the purpose of storing music files, statements, bills and other important documents, presentations etc. Organizations like Google, Amazon, Rackspace, and Dropbox are providing space access to storage-on-cloud for multiple uses. Besides organizations the concept of RaaS is getting popular among end-users too. Typically a user scans his important documents and store on the subscribed storage space. This helps him to access his important documents in transit. We first present the key determinants that influence the diffusion of RaaS among the end-users. Further to this, a service model is proposed where the retail point of sale would automatically store the invoices and bills on end-user's cloud. This would reduce the chances of missed documents and unnecessary troubles of scanning. The proposed model would also help to save the printing and paper cost for the retailer as well as for the user, further contributing towards the environment and sustainability. Additionally whenever required the user can provide the access code of the particular bill to the concerned authority for any verifications and approvals. The user can just point to that URL and hence he/she need not print the bilss. This would prevent the production of frauds and forged bills. In the current study we are presenting an improved process flow chart and architecture model for the illustrated concept. This is followed by the architecture description of the proposed service model.