The IPG Association is an international union of professionals in the field of cardboard packaging from Switzerland. It had two Drupal 7 websites. The first one was a business card with information about the Association, and the second had a technical emphasis and allowed working with reports and statistics. The ADCI Solutions\' main task was to upgrade the websites from Drupal 7 to Drupal 8 and integrate them into one for the simplicity and cheapness of support and maintenance in the future. What we did: combining two sites into one, content migration from Drupal 7 to Drupal 8, refactoring of the custom code, website performance optimization, technical debts’ reduction. Case study: https://www.adcisolutions.com/work/ipg-association