Orgwide custom background coming to Microsoft Teams
Custom backgrounds have been available for Microsoft Teams for some time now, but managing them from an organizational point of view has not been easy. The feature is expected to be rolling out in preview in the April-May time frame, and will hopefully reach GA by the end of July.
Mind you, the feature requires the "Advanced Communications license" when the feature hits GA. If you roll out this feature during preview, the images will be unavailable for users without the license one the preview ends.