For a survey to present relevant and strategic information, it must be prepared with great care and attention from beginning to end. The validity of data is essential for the research to achieve its goals. Therefore, we have a rigorous system of quality control that, through different processes, tools and audits, ensures the integrity of the collection and processing of data. Our surveys are conducted through a customized software, which can be integrated with digital platforms for online monitoring. Moreover, all the collected material is stored for subsequent rechecking when necessary.