This paper deals with the implementation of SaaS in the Russian market, especially in the Ural region of the Russian Federation -- Republic of Bashkortostan. SaaS is usually considered as an alternative way for the dominant model of software installation at the customer office. SaaS has certain key differences related to the use of different types of outsourcing and switching from buying products for permanent use to the system with subscription fee, depending on the specific use of resources. The goal of the theoretical part of the paper is to construct the comprehensive picture of Cloud computing, cloud services especially SaaS, to identify the strengths and weaknesses of SaaS technology, call attention to issues of risk, safety, the proc...