The article discusses the development of a classification system for primary and incisional abdominal wall hernias by members of the European Hernia Society (EHS) and other experts. The primary goal is to improve the comparability of studies and future research on these hernias. The meeting, held in Ghent, Belgium, in October 2008, aimed to create a simple, reproducible classification that could be widely used in hospitals and surgical literature. For primary abdominal wall hernias, the classification focuses on localization (epigastric, umbilical, small, medium, large) and size (diameter). For incisional hernias, the classification includes localization (medial or lateral zones) and size (width and length of the hernia defect). However, due to the complexity and diversity of incisional hernias, a single size variable was not agreed upon, preventing a comprehensive grid format. Instead, a semi-quantitative division based on width was included. The authors emphasize the need for a simple classification to establish registries and compare treatment outcomes, despite its limitations. They plan to validate the current proposal in surgical practices and aim for a future consensus meeting to further refine the classification based on hernia defect size.The article discusses the development of a classification system for primary and incisional abdominal wall hernias by members of the European Hernia Society (EHS) and other experts. The primary goal is to improve the comparability of studies and future research on these hernias. The meeting, held in Ghent, Belgium, in October 2008, aimed to create a simple, reproducible classification that could be widely used in hospitals and surgical literature. For primary abdominal wall hernias, the classification focuses on localization (epigastric, umbilical, small, medium, large) and size (diameter). For incisional hernias, the classification includes localization (medial or lateral zones) and size (width and length of the hernia defect). However, due to the complexity and diversity of incisional hernias, a single size variable was not agreed upon, preventing a comprehensive grid format. Instead, a semi-quantitative division based on width was included. The authors emphasize the need for a simple classification to establish registries and compare treatment outcomes, despite its limitations. They plan to validate the current proposal in surgical practices and aim for a future consensus meeting to further refine the classification based on hernia defect size.