Just like you can export your data from any cloud database provider and move it anywhere you like. That migration might be painful if you have a lot of data, b

Just like you can export your data from any cloud database provider and move it anywhere you like. That migration might be painful if you have a lot of data, but so is an RDBMS migration. You might need to change your code to support the new vendor's query language, but the same is true when moving to a new RDBMS, since there are usually implementation specific extensions that you'll need to port.