Abstract
Cloud computing, which is the today's and tomorrow's brightest venture, rising on the basis of the idea of the use of the online information, software and hardware. Cloud computing providing users three kinds of different service models; infrastructure services, platform services and software services; which in the run with all together as requested and meets the needs of users. With the transition to cloud computing we are able to have a chance to take advantage of many benefits of cloud computing. Increased security, monitored and maintained by the provider of a technical infrastructure, cost-saving, efficient use of resources, high flexibility, accessibility and device independent, you are able to benefit from the these opportunities as the possibility to give the desired performance every time. This paper describes the cloud computing technology with its features and continues with using advantages in business life. Traffic of a medium size company is examined in two different scenarios; LAN network and cloud computing network; and compared according to ftp, email, HTTP traffics using OPNET. In second part of the study, DiffServ and IntServ quality of service terms are studied over cloud computing model. A new approach is studied in order to improve the performance of cloud computing network in a medium sized company by combining IntServ and DiffServ in same network model. This model serves an improvement in business applications using cloud computing technology.