Bachelor thesis: 85 p., 20 figures, 6 tables, 40 references, 1 appendix. The object of research is development of architecture on top of the cloud that uses recommendation mechanisms. The subject of research are a methods and technologies that are used in cloud architection and recommender systems. The aim of the work is to build a system (architecture) using cloud technologies, in the center of which will be a recommendation system. The relevance of this work is associated with possibility of great impact on products revenue with help of personalized recommendations. The research keeps attention on the challenge of developing a recommendation system and predicting user preferences, with a specific focus on utilizing the Cloud technologies. This involves justifying the use of particular methods, tools, and the Cloud development environments, preparing and analyzing the initial dataset, preprocessing raw data, and developing mathematical models tailored to the recommendation problem. The final solution is implemented on AWS using Personalize and then the results are analyzed. Experiments and comparisons with existing approaches are conducted to evaluate the effectiveness of the recommendation system developed on AWS. The experimental results demonstrate the advantages of the Cloud deployment and Recommender systems in general.