In 2019, it was decided to launch its own online store and a mobile application in order to increase the online sales, and customers engagement and loyalt. The company needed to choose a reliable long-term contractor for the development and further support of the online store and the application. We contacted Astarus company with a prepared Terms of Reference. An analytical approach and deep immersion in user processes were decisive factors in choosing a contractor. In January 2019, the project was launched. Thanks to a comprehensive analysis and their experience in development, the Astarus team was able to improve the Terms of Reference by offering more convenient UX and options for interacting with the site and the application. They also suggested several possible pitfalls. We recommend cooperation with Astarus as a reliable contractor and partner. — Michael Chazov, Deputy Director-General, My Optima