Will you comment on why? Surely, if the database-as-a-REST-service model of DynamoDB is considered appropriate, Google Cloud Datastore will work too? Or is it

Will you comment on why? Surely, if the database-as-a-REST-service model of DynamoDB is considered appropriate, Google Cloud Datastore will work too? Or is it precisely that which you've changed your minds about? The managed-REST-DB approach? I'm curious because I'm currently writing an app, and I've chosen Google Datastore as the DB backend, primarily because it's managed (no DB VM maintenance), and makes scalability easy.