Background. Standard treatment of stage III and IV advanced ovarian cancer (AOC) consists of primary debulking surgery (PDS) followed by chemotherapy. Since the publication of the European OrganisationforResearchandTreatmentofCancer/NationalCancer Institute of Canada trial, clinical practice has changed and many AOC patients are now treated with neoadjuvant chemotherapy (NACT) followedbyintervaldebulkingsurgery(IDS).Thebestoptionremains unclear. Ovarian cancer is a heterogenic disease. Should we use the diversityinbiologyofthetumorandpatternsoftumorlocalizationto better stratify patients between both approaches? Methods. This analysis was based on results of five phase III randomized controlled trials on PDS and IDS in AOC patients, three Cochrane reviews, and four meta-analyses.