My thought is that ArcGIS Online apps should have a language switcher for multiple languages. I have noticed that ArcGIS Online apps language interface changes based on a user’s browser language. But it would be better if there was an actual language toggle built in the interface. Right now only a few apps have a language switcher. https://www.esri.com/arcgis-blog/products/instant-apps/mapping/arcgis-instant-apps-language-switcher.... ArcGIS Web AppBuilder and ArcGIS Experience Builder should have language switchers as well (idea from Kostyantyn Bondarenko kbondar@fas.harvard.edu).