Hierarchical LOD

Hi all, which features are needed in order to have hierarchical LOD loading for my 3D tiles? I would like to create a 3d model for a city, how could I guarantee best performance and timing during loading and permit Hierarchical LOD?
Thank you very much!

If you upload it to Cesium ion (https://cesium.com/ion/) that should all be taken care of! There’s some more details about how it works on the page here:


Is this a design model you’re constructing? Or is it many different building models (like CityGML)?