You run a Node.js app that uses the official MongoDB driver against MongoDB Atlas. You plan to move to Azure while keeping code changes minimal and minimizing downtime during migration. What should you do?

The two correct options provide the most efficient and least disruptive migration path. Azure Cosmos DB for MongoDB is API-compatible with MongoDB, allowing you to use your existing Node.js application and official MongoDB driver with minimal code changes—primarily updating the connection string. This directly addresses the requirement for minimal code changes. Azure Database Migration Service (DMS) is designed for online migrations of databases, including MongoDB, to Azure Cosmos DB. This tool helps minimize downtime during the data transfer process, fulfilling the requirement for minimal downtime. Rewriting the application to use the Azure Cosmos DB SQL API SDK would involve significant code changes, violating the "minimal code changes" requirement. Using mongodump/mongorestore to migrate data into an Azure Cosmos DB SQL API account would also require rewriting the application, as the SQL API is not compatible with the MongoDB driver.