The diploma describes the problem of migrating an authorization payment system into a cloud. It describes in detail the authorization payment system used by Dinit, which deals with banking operations and credit cards. They are interested in migrating the existing system into the cloud, as successful migration will make it easier for further scaling. Among other things, this could save on hardware maintenance and upgrading costs. The diploma work describes the characteristics of cloud services. Both advantages and disadvantages are presented. The components of AS and their migration to the cloud are described in detail. We focus on the migration of the application and the database to the cloud, and describe the different solutions for each of the cloud providers.