Nowadays, usability and reliability are not everything. Trends change very quickly, competitors implement new technologies, and digital products need regular refreshment and reconstruction which guarantees customer trust and ensures a modern brand image. PSO needed a change. Although their website platformaopon.pl has served clients for many years, when the company contacted us it was high time to move away from the old design and outdated technologies.When external designers hired by PSO finished working on the new user interface, we were able to start implementing modern solutions from the code side. A very important element of our implementation was the appropriate preparation and optimization of the mobile version of the website. We wanted to make it possible to use all the features available on the web platform also accessible on mobile devices. This was to encourage customers to visit the website from smartphones and tablets, which play an increasingly important role in modern e-commerce.