In our work we use specialized basemaps and we want them to be available to global users. Now such users have access to a list of all basemaps - not local ones of our organization as we want. We have already seen similar topics on the forum, but a custom widget from one of the topics does not give results. Maybe there is an updated version of it or another solution?
Sounds like you want to create a custom basemap gallery for your organization? Here is a link to a tutorial:
Then you would just share it Publicly. If you keep it to the organization level or group level, you would require a login.
To share it publicly, go to the group and click "Settings" tab, then change the group membership and/or designation settings.
Settings of ExB app global too.
When we use the preview in ExB, local maps are displayed in the basemap list, but when the application is published there is a standard list
Go to your organization settings, under the "Map" section, change the Basemap gallery group. This should change which basemap is used when creating web applications. Not sure if it will update in your current web application. Maybe try a new one to test after you change the settings?