This document summarizes some of the key changes in the 2017 versions of GINA (Global Initiative for Asthma) and GOLD (Global Strategy for Diagnosis, Management and Prevention of COPD). It discusses updates to the definitions of asthma and its diagnosis. The stepwise approach to asthma management has been updated, including adding sublingual immunotherapy as an optional add-on treatment for some adult patients. Other changes include guidance on stepping down treatment and side effects of oral corticosteroids.