Cosmos DB from Microsoft Azure seems to be a much better choose, because it provides tons of useful features, but it also compatible with MongoDB, so if they de

Cosmos DB from Microsoft Azure seems to be a much better choose, because it provides tons of useful features, but it also compatible with MongoDB, so if they decide to increase prices or shut it down some day, you will be able to use regular MongoDB instead. With Firestore it's not the case and you are locked with a proprietary solution.