Azure Regions for AppService not in line with regions available for MongoDB deployment

Hi all, I’m just starting with MongoDB Atlas and have a question regarding the Azure regions. For MongoDB it is possible to deploy to Zurich Switzerland or Geneva Switzerland, however App Services cannot be deployed to Switzerland, Netherlands seem to be the only option in Europe. Is there a special reason for that or is this something which will be available soon? For performance reason I would expect to have both deployed to the same region.