Abstract: Technology is the combination of knowledge and working hard. When users want to accomplish something using special technology, they do not want to know how it works. Technologies are coming to solve and ease our complex problems. It means that users only want to employ technology without any expert skills. Distributed computing is one of the technologies that is used to solve large and complex computational problems. It is based on distributed systems to address computational problems. In this study we are going to highlight the most well-known distributed computing paradigms and explain their technology building blocks. We provide a comprehensive explanation of cloud computing, volunteer computing and also volunteer cloud computing paradigm along with their advantages and also their open issues.