Seminar paper from the year 2019 in the subject Computer Science - Miscellaneous, grade: 1.3, University of Applied Sciences Dortmund, language: English, abstract: This paper is going to explore the possibilities of cloud computing, which effects different cloud architectures have and in which scenarios they are relevant. First, the basics of cloud computing are explained, how it basically works, and what the standard cloud models are. Afterwards different scenarios for cloud computing and their technological architectures are shown. To display how different cloud architectures can be build, the solutions of OpenStack and OpenNebula for creating a cloud infrastructure are introduced and compared to each other. To frame the paper, the topic will be shortly summarized in the end. The cloud and cloud computing are topics everyone is currently talking about. It is often used as a buzzword in marketing to improve the sales just because it sounds modern. Nevertheless, the cloud is a very important topic in the IT environment nowadays. There are probably still a lot of companies that do not use cloud tools at all or just a small portion of the benefits, simply because they do not know what is possible and what is not possible.