Hi @muthu ,
As per the attached thread https://community.cesium.com/t/cesium-search-not-working-accurately/8274 Cesium uses the Pelias geocoder by default and I want to use Bing maps geocoding service, that’s why I need key.
Just go to Cesium Sandcastle and go to the network tab it will call one cesium API to load the Bing imagery. In response of that API you will get one key. I used this key as a Bing API key for BingMapsGeocoderService and it was working properly. So, my question is, Is this a valid Bing API key? I’ve attached screenshot of API which shows the API response.