At AWS re:Invent, a cloud-controlled Mars rover was demonstrated using MongoDB Mobile, MongoDB Stitch, and AWS services. The mission control app recorded user commands in MongoDB Atlas, storing them in an array within the rover's document to queue up and send commands as soon as the rover was back online. This approach simplifies database access by allowing direct execution of MongoDB Query Language operations from the frontend app using the Stitch SDK, removing the need for boilerplate code and providing fine-grained user access controls through the Stitch service or obfuscating the schema via Stitch Functions. The demo showcases how MongoDB Stitch can be used to build cloud-controlled applications with simplified database access and reduced development time.