The children's development center doesn't have the most extensive base. Therefore, it was important for us to ensure that all changes reached every potential client. We started sending messages to our clients when a new English teacher joined our center. Using SMS messages turned out to be the optimal solution. In one day, we received 12 applications from parents whose children hadn't attended our center for over a year because there were no suitable programs for their age. Currently, we continue to use MTS Exolve products to improve the efficiency of our work.